Home / 15,905.65-21,951.11-8,832.53

Finding the Fourth Proportional to 15,905.65, 21,951.11 and 8,832.53

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Solution

The fourth proportional to 15,905.65, 21,951.11 and 8,832.53 is: 12,189.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.65 : 21,951.11 = 8,832.53 : x
  2. Step 2: Convert to fraction form
    15,905.65/21,951.11 = 8,832.53/x
  3. Step 3: Cross multiply
    15,905.65x = 21,951.11 × 8,832.53
  4. Step 4: Simplify right side
    15,905.65x = 193,883,837.61
  5. Step 5: Solve for x
    x = 193,883,837.61/15,905.65
  6. Step 6: Final answer
    x = 12,189.62

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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.