Home / 40,372.10-55,655.76-28,398.28

Finding the Fourth Proportional to 40,372.10, 55,655.76 and 28,398.28

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Solution

The fourth proportional to 40,372.10, 55,655.76 and 28,398.28 is: 39,149.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,372.10 : 55,655.76 = 28,398.28 : x
  2. Step 2: Convert to fraction form
    40,372.10/55,655.76 = 28,398.28/x
  3. Step 3: Cross multiply
    40,372.10x = 55,655.76 × 28,398.28
  4. Step 4: Simplify right side
    40,372.10x = 1,580,527,577.81
  5. Step 5: Solve for x
    x = 1,580,527,577.81/40,372.10
  6. Step 6: Final answer
    x = 39,149.01

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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.