Home / 20,845.76-28,767.51-14,887.58

Finding the Fourth Proportional to 20,845.76, 28,767.51 and 14,887.58

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Solution

The fourth proportional to 20,845.76, 28,767.51 and 14,887.58 is: 20,545.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.76 : 28,767.51 = 14,887.58 : x
  2. Step 2: Convert to fraction form
    20,845.76/28,767.51 = 14,887.58/x
  3. Step 3: Cross multiply
    20,845.76x = 28,767.51 × 14,887.58
  4. Step 4: Simplify right side
    20,845.76x = 428,278,462.69
  5. Step 5: Solve for x
    x = 428,278,462.69/20,845.76
  6. Step 6: Final answer
    x = 20,545.12

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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.