Home / 10,528.38-15,715.76-9,711.90

Finding the Fourth Proportional to 10,528.38, 15,715.76 and 9,711.90

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Solution

The fourth proportional to 10,528.38, 15,715.76 and 9,711.90 is: 14,496.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,528.38 : 15,715.76 = 9,711.90 : x
  2. Step 2: Convert to fraction form
    10,528.38/15,715.76 = 9,711.90/x
  3. Step 3: Cross multiply
    10,528.38x = 15,715.76 × 9,711.90
  4. Step 4: Simplify right side
    10,528.38x = 152,629,840.98
  5. Step 5: Solve for x
    x = 152,629,840.98/10,528.38
  6. Step 6: Final answer
    x = 14,496.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.