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Finding the Fourth Proportional to 17,941.40, 24,761.40 and 9,987.20

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Solution

The fourth proportional to 17,941.40, 24,761.40 and 9,987.20 is: 13,783.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,941.40 : 24,761.40 = 9,987.20 : x
  2. Step 2: Convert to fraction form
    17,941.40/24,761.40 = 9,987.20/x
  3. Step 3: Cross multiply
    17,941.40x = 24,761.40 × 9,987.20
  4. Step 4: Simplify right side
    17,941.40x = 247,297,054.08
  5. Step 5: Solve for x
    x = 247,297,054.08/17,941.40
  6. Step 6: Final answer
    x = 13,783.60

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Similar ratio
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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.