Home / 28,090.05-42,135.08-7,313.55

Finding the Fourth Proportional to 28,090.05, 42,135.08 and 7,313.55

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Solution

The fourth proportional to 28,090.05, 42,135.08 and 7,313.55 is: 10,970.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,090.05 : 42,135.08 = 7,313.55 : x
  2. Step 2: Convert to fraction form
    28,090.05/42,135.08 = 7,313.55/x
  3. Step 3: Cross multiply
    28,090.05x = 42,135.08 × 7,313.55
  4. Step 4: Simplify right side
    28,090.05x = 308,156,977.77
  5. Step 5: Solve for x
    x = 308,156,977.77/28,090.05
  6. Step 6: Final answer
    x = 10,970.33

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Half scale
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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.