Home / 20,658.59-28,508.27-11,708.99

Finding the Fourth Proportional to 20,658.59, 28,508.27 and 11,708.99

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Solution

The fourth proportional to 20,658.59, 28,508.27 and 11,708.99 is: 16,158.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.59 : 28,508.27 = 11,708.99 : x
  2. Step 2: Convert to fraction form
    20,658.59/28,508.27 = 11,708.99/x
  3. Step 3: Cross multiply
    20,658.59x = 28,508.27 × 11,708.99
  4. Step 4: Simplify right side
    20,658.59x = 333,802,989.80
  5. Step 5: Solve for x
    x = 333,802,989.80/20,658.59
  6. Step 6: Final answer
    x = 16,158.07

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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.