Home / 10,070.28-15,107.79-9,902.91

Finding the Fourth Proportional to 10,070.28, 15,107.79 and 9,902.91

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Solution

The fourth proportional to 10,070.28, 15,107.79 and 9,902.91 is: 14,856.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,070.28 : 15,107.79 = 9,902.91 : x
  2. Step 2: Convert to fraction form
    10,070.28/15,107.79 = 9,902.91/x
  3. Step 3: Cross multiply
    10,070.28x = 15,107.79 × 9,902.91
  4. Step 4: Simplify right side
    10,070.28x = 149,611,084.67
  5. Step 5: Solve for x
    x = 149,611,084.67/10,070.28
  6. Step 6: Final answer
    x = 14,856.70

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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.