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Finding the Fourth Proportional to 29,266.80, 43,878.60 and 12,613.20

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Solution

The fourth proportional to 29,266.80, 43,878.60 and 12,613.20 is: 18,910.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,266.80 : 43,878.60 = 12,613.20 : x
  2. Step 2: Convert to fraction form
    29,266.80/43,878.60 = 12,613.20/x
  3. Step 3: Cross multiply
    29,266.80x = 43,878.60 × 12,613.20
  4. Step 4: Simplify right side
    29,266.80x = 553,449,557.52
  5. Step 5: Solve for x
    x = 553,449,557.52/29,266.80
  6. Step 6: Final answer
    x = 18,910.49

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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.