Home / 15,612.18-21,543.90-8,896.88

Finding the Fourth Proportional to 15,612.18, 21,543.90 and 8,896.88

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Solution

The fourth proportional to 15,612.18, 21,543.90 and 8,896.88 is: 12,277.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,612.18 : 21,543.90 = 8,896.88 : x
  2. Step 2: Convert to fraction form
    15,612.18/21,543.90 = 8,896.88/x
  3. Step 3: Cross multiply
    15,612.18x = 21,543.90 × 8,896.88
  4. Step 4: Simplify right side
    15,612.18x = 191,673,493.03
  5. Step 5: Solve for x
    x = 191,673,493.03/15,612.18
  6. Step 6: Final answer
    x = 12,277.18

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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.