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Finding the Fourth Proportional to 13,332, 19,987.20 and 5,546.64

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Solution

The fourth proportional to 13,332, 19,987.20 and 5,546.64 is: 8,315.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,332 : 19,987.20 = 5,546.64 : x
  2. Step 2: Convert to fraction form
    13,332/19,987.20 = 5,546.64/x
  3. Step 3: Cross multiply
    13,332x = 19,987.20 × 5,546.64
  4. Step 4: Simplify right side
    13,332x = 110,861,803.01
  5. Step 5: Solve for x
    x = 110,861,803.01/13,332
  6. Step 6: Final answer
    x = 8,315.47

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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.