Home / 15,530.10-21,432.06-8,456.76

Finding the Fourth Proportional to 15,530.10, 21,432.06 and 8,456.76

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Solution

The fourth proportional to 15,530.10, 21,432.06 and 8,456.76 is: 11,670.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,530.10 : 21,432.06 = 8,456.76 : x
  2. Step 2: Convert to fraction form
    15,530.10/21,432.06 = 8,456.76/x
  3. Step 3: Cross multiply
    15,530.10x = 21,432.06 × 8,456.76
  4. Step 4: Simplify right side
    15,530.10x = 181,245,787.73
  5. Step 5: Solve for x
    x = 181,245,787.73/15,530.10
  6. Step 6: Final answer
    x = 11,670.61

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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.