Home / 15,443.24-21,312.11-8,729.15

Finding the Fourth Proportional to 15,443.24, 21,312.11 and 8,729.15

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Solution

The fourth proportional to 15,443.24, 21,312.11 and 8,729.15 is: 12,046.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,443.24 : 21,312.11 = 8,729.15 : x
  2. Step 2: Convert to fraction form
    15,443.24/21,312.11 = 8,729.15/x
  3. Step 3: Cross multiply
    15,443.24x = 21,312.11 × 8,729.15
  4. Step 4: Simplify right side
    15,443.24x = 186,036,454.80
  5. Step 5: Solve for x
    x = 186,036,454.80/15,443.24
  6. Step 6: Final answer
    x = 12,046.47

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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.