Home / 20,566.74-28,354.66-15,440.56

Finding the Fourth Proportional to 20,566.74, 28,354.66 and 15,440.56

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Solution

The fourth proportional to 20,566.74, 28,354.66 and 15,440.56 is: 21,287.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.74 : 28,354.66 = 15,440.56 : x
  2. Step 2: Convert to fraction form
    20,566.74/28,354.66 = 15,440.56/x
  3. Step 3: Cross multiply
    20,566.74x = 28,354.66 × 15,440.56
  4. Step 4: Simplify right side
    20,566.74x = 437,811,719.52
  5. Step 5: Solve for x
    x = 437,811,719.52/20,566.74
  6. Step 6: Final answer
    x = 21,287.36

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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.