Home / 25,723.17-38,578.88-12,389.36

Finding the Fourth Proportional to 25,723.17, 38,578.88 and 12,389.36

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Solution

The fourth proportional to 25,723.17, 38,578.88 and 12,389.36 is: 18,581.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,723.17 : 38,578.88 = 12,389.36 : x
  2. Step 2: Convert to fraction form
    25,723.17/38,578.88 = 12,389.36/x
  3. Step 3: Cross multiply
    25,723.17x = 38,578.88 × 12,389.36
  4. Step 4: Simplify right side
    25,723.17x = 477,967,470.80
  5. Step 5: Solve for x
    x = 477,967,470.80/25,723.17
  6. Step 6: Final answer
    x = 18,581.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.