Home / 20,428.11-28,166.27-14,753.79

Finding the Fourth Proportional to 20,428.11, 28,166.27 and 14,753.79

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Solution

The fourth proportional to 20,428.11, 28,166.27 and 14,753.79 is: 20,342.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,428.11 : 28,166.27 = 14,753.79 : x
  2. Step 2: Convert to fraction form
    20,428.11/28,166.27 = 14,753.79/x
  3. Step 3: Cross multiply
    20,428.11x = 28,166.27 × 14,753.79
  4. Step 4: Simplify right side
    20,428.11x = 415,559,158.89
  5. Step 5: Solve for x
    x = 415,559,158.89/20,428.11
  6. Step 6: Final answer
    x = 20,342.52

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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.