Home / 39,630.40-54,690.02-21,726.06

Finding the Fourth Proportional to 39,630.40, 54,690.02 and 21,726.06

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Solution

The fourth proportional to 39,630.40, 54,690.02 and 21,726.06 is: 29,982.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,630.40 : 54,690.02 = 21,726.06 : x
  2. Step 2: Convert to fraction form
    39,630.40/54,690.02 = 21,726.06/x
  3. Step 3: Cross multiply
    39,630.40x = 54,690.02 × 21,726.06
  4. Step 4: Simplify right side
    39,630.40x = 1,188,198,655.92
  5. Step 5: Solve for x
    x = 1,188,198,655.92/39,630.40
  6. Step 6: Final answer
    x = 29,982.00

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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.