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Finding the Fourth Proportional to 19,951.60, 29,908.20 and 15,506.80

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Solution

The fourth proportional to 19,951.60, 29,908.20 and 15,506.80 is: 23,245.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,951.60 : 29,908.20 = 15,506.80 : x
  2. Step 2: Convert to fraction form
    19,951.60/29,908.20 = 15,506.80/x
  3. Step 3: Cross multiply
    19,951.60x = 29,908.20 × 15,506.80
  4. Step 4: Simplify right side
    19,951.60x = 463,780,475.76
  5. Step 5: Solve for x
    x = 463,780,475.76/19,951.60
  6. Step 6: Final answer
    x = 23,245.28

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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.