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Finding the Fourth Proportional to 29,187.60, 43,781.40 and 21,703.20

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Solution

The fourth proportional to 29,187.60, 43,781.40 and 21,703.20 is: 32,554.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,187.60 : 43,781.40 = 21,703.20 : x
  2. Step 2: Convert to fraction form
    29,187.60/43,781.40 = 21,703.20/x
  3. Step 3: Cross multiply
    29,187.60x = 43,781.40 × 21,703.20
  4. Step 4: Simplify right side
    29,187.60x = 950,196,480.48
  5. Step 5: Solve for x
    x = 950,196,480.48/29,187.60
  6. Step 6: Final answer
    x = 32,554.80

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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.