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Finding the Fourth Proportional to 17,920.40, 24,730.44 and 9,962.72

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Solution

The fourth proportional to 17,920.40, 24,730.44 and 9,962.72 is: 13,748.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,920.40 : 24,730.44 = 9,962.72 : x
  2. Step 2: Convert to fraction form
    17,920.40/24,730.44 = 9,962.72/x
  3. Step 3: Cross multiply
    17,920.40x = 24,730.44 × 9,962.72
  4. Step 4: Simplify right side
    17,920.40x = 246,382,449.20
  5. Step 5: Solve for x
    x = 246,382,449.20/17,920.40
  6. Step 6: Final answer
    x = 13,748.71

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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.