Home / 15,617.20-21,552.18-8,543.98

Finding the Fourth Proportional to 15,617.20, 21,552.18 and 8,543.98

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Solution

The fourth proportional to 15,617.20, 21,552.18 and 8,543.98 is: 11,790.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,617.20 : 21,552.18 = 8,543.98 : x
  2. Step 2: Convert to fraction form
    15,617.20/21,552.18 = 8,543.98/x
  3. Step 3: Cross multiply
    15,617.20x = 21,552.18 × 8,543.98
  4. Step 4: Simplify right side
    15,617.20x = 184,141,394.88
  5. Step 5: Solve for x
    x = 184,141,394.88/15,617.20
  6. Step 6: Final answer
    x = 11,790.94

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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.