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Finding the Fourth Proportional to 19,478.40, 29,282.40 and 16,627.20

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Solution

The fourth proportional to 19,478.40, 29,282.40 and 16,627.20 is: 24,996.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,478.40 : 29,282.40 = 16,627.20 : x
  2. Step 2: Convert to fraction form
    19,478.40/29,282.40 = 16,627.20/x
  3. Step 3: Cross multiply
    19,478.40x = 29,282.40 × 16,627.20
  4. Step 4: Simplify right side
    19,478.40x = 486,884,321.28
  5. Step 5: Solve for x
    x = 486,884,321.28/19,478.40
  6. Step 6: Final answer
    x = 24,996.11

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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.