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Finding the Fourth Proportional to 29,404.64, 40,578.88 and 15,976.16

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Solution

The fourth proportional to 29,404.64, 40,578.88 and 15,976.16 is: 22,047.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,404.64 : 40,578.88 = 15,976.16 : x
  2. Step 2: Convert to fraction form
    29,404.64/40,578.88 = 15,976.16/x
  3. Step 3: Cross multiply
    29,404.64x = 40,578.88 × 15,976.16
  4. Step 4: Simplify right side
    29,404.64x = 648,294,679.50
  5. Step 5: Solve for x
    x = 648,294,679.50/29,404.64
  6. Step 6: Final answer
    x = 22,047.36

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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.