Home / 40,371.04-55,654.30-28,397.21

Finding the Fourth Proportional to 40,371.04, 55,654.30 and 28,397.21

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Solution

The fourth proportional to 40,371.04, 55,654.30 and 28,397.21 is: 39,147.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,371.04 : 55,654.30 = 28,397.21 : x
  2. Step 2: Convert to fraction form
    40,371.04/55,654.30 = 28,397.21/x
  3. Step 3: Cross multiply
    40,371.04x = 55,654.30 × 28,397.21
  4. Step 4: Simplify right side
    40,371.04x = 1,580,426,755.05
  5. Step 5: Solve for x
    x = 1,580,426,755.05/40,371.04
  6. Step 6: Final answer
    x = 39,147.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.