Home / 39,141.02-54,014.20-21,235.88

Finding the Fourth Proportional to 39,141.02, 54,014.20 and 21,235.88

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Solution

The fourth proportional to 39,141.02, 54,014.20 and 21,235.88 is: 29,305.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,141.02 : 54,014.20 = 21,235.88 : x
  2. Step 2: Convert to fraction form
    39,141.02/54,014.20 = 21,235.88/x
  3. Step 3: Cross multiply
    39,141.02x = 54,014.20 × 21,235.88
  4. Step 4: Simplify right side
    39,141.02x = 1,147,039,151.44
  5. Step 5: Solve for x
    x = 1,147,039,151.44/39,141.02
  6. Step 6: Final answer
    x = 29,305.29

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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.