Home / 15,463.28-21,339.48-8,389.76

Finding the Fourth Proportional to 15,463.28, 21,339.48 and 8,389.76

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Solution

The fourth proportional to 15,463.28, 21,339.48 and 8,389.76 is: 11,577.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,463.28 : 21,339.48 = 8,389.76 : x
  2. Step 2: Convert to fraction form
    15,463.28/21,339.48 = 8,389.76/x
  3. Step 3: Cross multiply
    15,463.28x = 21,339.48 × 8,389.76
  4. Step 4: Simplify right side
    15,463.28x = 179,033,115.72
  5. Step 5: Solve for x
    x = 179,033,115.72/15,463.28
  6. Step 6: Final answer
    x = 11,577.95

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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.