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Finding the Fourth Proportional to 15,344.16, 21,174.48 and 8,630.16

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Solution

The fourth proportional to 15,344.16, 21,174.48 and 8,630.16 is: 11,909.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,344.16 : 21,174.48 = 8,630.16 : x
  2. Step 2: Convert to fraction form
    15,344.16/21,174.48 = 8,630.16/x
  3. Step 3: Cross multiply
    15,344.16x = 21,174.48 × 8,630.16
  4. Step 4: Simplify right side
    15,344.16x = 182,739,150.32
  5. Step 5: Solve for x
    x = 182,739,150.32/15,344.16
  6. Step 6: Final answer
    x = 11,909.36

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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.