Home / 39,245.02-54,158.81-21,340.15

Finding the Fourth Proportional to 39,245.02, 54,158.81 and 21,340.15

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Solution

The fourth proportional to 39,245.02, 54,158.81 and 21,340.15 is: 29,449.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,245.02 : 54,158.81 = 21,340.15 : x
  2. Step 2: Convert to fraction form
    39,245.02/54,158.81 = 21,340.15/x
  3. Step 3: Cross multiply
    39,245.02x = 54,158.81 × 21,340.15
  4. Step 4: Simplify right side
    39,245.02x = 1,155,757,129.22
  5. Step 5: Solve for x
    x = 1,155,757,129.22/39,245.02
  6. Step 6: Final answer
    x = 29,449.78

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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.