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Finding the Fourth Proportional to 16,615.85, 22,929.30 and 9,898.00

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Solution

The fourth proportional to 16,615.85, 22,929.30 and 9,898.00 is: 13,658.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,615.85 : 22,929.30 = 9,898.00 : x
  2. Step 2: Convert to fraction form
    16,615.85/22,929.30 = 9,898.00/x
  3. Step 3: Cross multiply
    16,615.85x = 22,929.30 × 9,898.00
  4. Step 4: Simplify right side
    16,615.85x = 226,954,154.08
  5. Step 5: Solve for x
    x = 226,954,154.08/16,615.85
  6. Step 6: Final answer
    x = 13,658.90

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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.