Home / 20,113.40-30,170.10-10,897.40

Finding the Fourth Proportional to 20,113.40, 30,170.10 and 10,897.40

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Solution

The fourth proportional to 20,113.40, 30,170.10 and 10,897.40 is: 16,346.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,113.40 : 30,170.10 = 10,897.40 : x
  2. Step 2: Convert to fraction form
    20,113.40/30,170.10 = 10,897.40/x
  3. Step 3: Cross multiply
    20,113.40x = 30,170.10 × 10,897.40
  4. Step 4: Simplify right side
    20,113.40x = 328,775,647.74
  5. Step 5: Solve for x
    x = 328,775,647.74/20,113.40
  6. Step 6: Final answer
    x = 16,346.10

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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.