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Finding the Fourth Proportional to 13,560, 20,337.60 and 6,162.72

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Solution

The fourth proportional to 13,560, 20,337.60 and 6,162.72 is: 9,242.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,560 : 20,337.60 = 6,162.72 : x
  2. Step 2: Convert to fraction form
    13,560/20,337.60 = 6,162.72/x
  3. Step 3: Cross multiply
    13,560x = 20,337.60 × 6,162.72
  4. Step 4: Simplify right side
    13,560x = 125,334,934.27
  5. Step 5: Solve for x
    x = 125,334,934.27/13,560
  6. Step 6: Final answer
    x = 9,242.99

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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.