Home / 20,402.76-28,155.96-11,450.46

Finding the Fourth Proportional to 20,402.76, 28,155.96 and 11,450.46

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Solution

The fourth proportional to 20,402.76, 28,155.96 and 11,450.46 is: 15,801.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402.76 : 28,155.96 = 11,450.46 : x
  2. Step 2: Convert to fraction form
    20,402.76/28,155.96 = 11,450.46/x
  3. Step 3: Cross multiply
    20,402.76x = 28,155.96 × 11,450.46
  4. Step 4: Simplify right side
    20,402.76x = 322,398,693.74
  5. Step 5: Solve for x
    x = 322,398,693.74/20,402.76
  6. Step 6: Final answer
    x = 15,801.72

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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.