Home / 39,631.53-54,690.06-21,726.15

Finding the Fourth Proportional to 39,631.53, 54,690.06 and 21,726.15

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Solution

The fourth proportional to 39,631.53, 54,690.06 and 21,726.15 is: 29,981.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,631.53 : 54,690.06 = 21,726.15 : x
  2. Step 2: Convert to fraction form
    39,631.53/54,690.06 = 21,726.15/x
  3. Step 3: Cross multiply
    39,631.53x = 54,690.06 × 21,726.15
  4. Step 4: Simplify right side
    39,631.53x = 1,188,204,323.45
  5. Step 5: Solve for x
    x = 1,188,204,323.45/39,631.53
  6. Step 6: Final answer
    x = 29,981.29

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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.