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Finding the Fourth Proportional to 16,860, 25,275.36 and 9,059.68

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Solution

The fourth proportional to 16,860, 25,275.36 and 9,059.68 is: 13,581.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,860 : 25,275.36 = 9,059.68 : x
  2. Step 2: Convert to fraction form
    16,860/25,275.36 = 9,059.68/x
  3. Step 3: Cross multiply
    16,860x = 25,275.36 × 9,059.68
  4. Step 4: Simplify right side
    16,860x = 228,986,673.48
  5. Step 5: Solve for x
    x = 228,986,673.48/16,860
  6. Step 6: Final answer
    x = 13,581.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.