Home / 28,719.92-39,633.10-15,972.98

Finding the Fourth Proportional to 28,719.92, 39,633.10 and 15,972.98

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Solution

The fourth proportional to 28,719.92, 39,633.10 and 15,972.98 is: 22,042.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,719.92 : 39,633.10 = 15,972.98 : x
  2. Step 2: Convert to fraction form
    28,719.92/39,633.10 = 15,972.98/x
  3. Step 3: Cross multiply
    28,719.92x = 39,633.10 × 15,972.98
  4. Step 4: Simplify right side
    28,719.92x = 633,058,713.64
  5. Step 5: Solve for x
    x = 633,058,713.64/28,719.92
  6. Step 6: Final answer
    x = 22,042.50

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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.