Home / 39,623.31-54,680.85-21,717.18

Finding the Fourth Proportional to 39,623.31, 54,680.85 and 21,717.18

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Solution

The fourth proportional to 39,623.31, 54,680.85 and 21,717.18 is: 29,970.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,623.31 : 54,680.85 = 21,717.18 : x
  2. Step 2: Convert to fraction form
    39,623.31/54,680.85 = 21,717.18/x
  3. Step 3: Cross multiply
    39,623.31x = 54,680.85 × 21,717.18
  4. Step 4: Simplify right side
    39,623.31x = 1,187,513,862.00
  5. Step 5: Solve for x
    x = 1,187,513,862.00/39,623.31
  6. Step 6: Final answer
    x = 29,970.08

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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.