Home / 20,731.59-28,613.67-14,440.32

Finding the Fourth Proportional to 20,731.59, 28,613.67 and 14,440.32

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Solution

The fourth proportional to 20,731.59, 28,613.67 and 14,440.32 is: 19,930.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.59 : 28,613.67 = 14,440.32 : x
  2. Step 2: Convert to fraction form
    20,731.59/28,613.67 = 14,440.32/x
  3. Step 3: Cross multiply
    20,731.59x = 28,613.67 × 14,440.32
  4. Step 4: Simplify right side
    20,731.59x = 413,190,551.17
  5. Step 5: Solve for x
    x = 413,190,551.17/20,731.59
  6. Step 6: Final answer
    x = 19,930.48

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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.