Home / 20,700.50-28,569.24-11,750.81

Finding the Fourth Proportional to 20,700.50, 28,569.24 and 11,750.81

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Solution

The fourth proportional to 20,700.50, 28,569.24 and 11,750.81 is: 16,217.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.50 : 28,569.24 = 11,750.81 : x
  2. Step 2: Convert to fraction form
    20,700.50/28,569.24 = 11,750.81/x
  3. Step 3: Cross multiply
    20,700.50x = 28,569.24 × 11,750.81
  4. Step 4: Simplify right side
    20,700.50x = 335,711,568.24
  5. Step 5: Solve for x
    x = 335,711,568.24/20,700.50
  6. Step 6: Final answer
    x = 16,217.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.