Home / 18,677,090.70-28,015,636.05-5,213,897.10

Finding the Fourth Proportional to 18,677,090.70, 28,015,636.05 and 5,213,897.10

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Solution

The fourth proportional to 18,677,090.70, 28,015,636.05 and 5,213,897.10 is: 7,820,845.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,677,090.70 : 28,015,636.05 = 5,213,897.10 : x
  2. Step 2: Convert to fraction form
    18,677,090.70/28,015,636.05 = 5,213,897.10/x
  3. Step 3: Cross multiply
    18,677,090.70x = 28,015,636.05 × 5,213,897.10
  4. Step 4: Simplify right side
    18,677,090.70x = 146,070,643,555,750.44
  5. Step 5: Solve for x
    x = 146,070,643,555,750.44/18,677,090.70
  6. Step 6: Final answer
    x = 7,820,845.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.