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Finding the Fourth Proportional to 29,281.60, 43,922.40 and 8,507.20

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Solution

The fourth proportional to 29,281.60, 43,922.40 and 8,507.20 is: 12,760.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,281.60 : 43,922.40 = 8,507.20 : x
  2. Step 2: Convert to fraction form
    29,281.60/43,922.40 = 8,507.20/x
  3. Step 3: Cross multiply
    29,281.60x = 43,922.40 × 8,507.20
  4. Step 4: Simplify right side
    29,281.60x = 373,656,641.28
  5. Step 5: Solve for x
    x = 373,656,641.28/29,281.60
  6. Step 6: Final answer
    x = 12,760.80

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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.