Home / 10,106.60-15,143.70-6,402.20

Finding the Fourth Proportional to 10,106.60, 15,143.70 and 6,402.20

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Solution

The fourth proportional to 10,106.60, 15,143.70 and 6,402.20 is: 9,593.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,106.60 : 15,143.70 = 6,402.20 : x
  2. Step 2: Convert to fraction form
    10,106.60/15,143.70 = 6,402.20/x
  3. Step 3: Cross multiply
    10,106.60x = 15,143.70 × 6,402.20
  4. Step 4: Simplify right side
    10,106.60x = 96,952,996.14
  5. Step 5: Solve for x
    x = 96,952,996.14/10,106.60
  6. Step 6: Final answer
    x = 9,593.04

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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.