Home / 39,630.40-54,689.70-21,726.52

Finding the Fourth Proportional to 39,630.40, 54,689.70 and 21,726.52

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Solution

The fourth proportional to 39,630.40, 54,689.70 and 21,726.52 is: 29,982.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,630.40 : 54,689.70 = 21,726.52 : x
  2. Step 2: Convert to fraction form
    39,630.40/54,689.70 = 21,726.52/x
  3. Step 3: Cross multiply
    39,630.40x = 54,689.70 × 21,726.52
  4. Step 4: Simplify right side
    39,630.40x = 1,188,216,860.84
  5. Step 5: Solve for x
    x = 1,188,216,860.84/39,630.40
  6. Step 6: Final answer
    x = 29,982.46

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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.