Home / 20,830.27-28,715.88-14,851.56

Finding the Fourth Proportional to 20,830.27, 28,715.88 and 14,851.56

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Solution

The fourth proportional to 20,830.27, 28,715.88 and 14,851.56 is: 20,473.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.27 : 28,715.88 = 14,851.56 : x
  2. Step 2: Convert to fraction form
    20,830.27/28,715.88 = 14,851.56/x
  3. Step 3: Cross multiply
    20,830.27x = 28,715.88 × 14,851.56
  4. Step 4: Simplify right side
    20,830.27x = 426,475,451.39
  5. Step 5: Solve for x
    x = 426,475,451.39/20,830.27
  6. Step 6: Final answer
    x = 20,473.83

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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.