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Finding the Fourth Proportional to 19,335.60, 29,006.10 and 8,242.20

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Solution

The fourth proportional to 19,335.60, 29,006.10 and 8,242.20 is: 12,364.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,335.60 : 29,006.10 = 8,242.20 : x
  2. Step 2: Convert to fraction form
    19,335.60/29,006.10 = 8,242.20/x
  3. Step 3: Cross multiply
    19,335.60x = 29,006.10 × 8,242.20
  4. Step 4: Simplify right side
    19,335.60x = 239,074,077.42
  5. Step 5: Solve for x
    x = 239,074,077.42/19,335.60
  6. Step 6: Final answer
    x = 12,364.45

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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.