Home / 39,329.02-54,272.12-21,422.96

Finding the Fourth Proportional to 39,329.02, 54,272.12 and 21,422.96

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Solution

The fourth proportional to 39,329.02, 54,272.12 and 21,422.96 is: 29,562.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,329.02 : 54,272.12 = 21,422.96 : x
  2. Step 2: Convert to fraction form
    39,329.02/54,272.12 = 21,422.96/x
  3. Step 3: Cross multiply
    39,329.02x = 54,272.12 × 21,422.96
  4. Step 4: Simplify right side
    39,329.02x = 1,162,669,077.40
  5. Step 5: Solve for x
    x = 1,162,669,077.40/39,329.02
  6. Step 6: Final answer
    x = 29,562.63

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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.