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Finding the Fourth Proportional to 14,679.52, 21,976.08 and 9,115.04

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Solution

The fourth proportional to 14,679.52, 21,976.08 and 9,115.04 is: 13,645.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,679.52 : 21,976.08 = 9,115.04 : x
  2. Step 2: Convert to fraction form
    14,679.52/21,976.08 = 9,115.04/x
  3. Step 3: Cross multiply
    14,679.52x = 21,976.08 × 9,115.04
  4. Step 4: Simplify right side
    14,679.52x = 200,312,848.24
  5. Step 5: Solve for x
    x = 200,312,848.24/14,679.52
  6. Step 6: Final answer
    x = 13,645.74

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1.5x scale

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.