Home / 15,500.45-21,389.13-8,694.77

Finding the Fourth Proportional to 15,500.45, 21,389.13 and 8,694.77

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Solution

The fourth proportional to 15,500.45, 21,389.13 and 8,694.77 is: 11,997.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,500.45 : 21,389.13 = 8,694.77 : x
  2. Step 2: Convert to fraction form
    15,500.45/21,389.13 = 8,694.77/x
  3. Step 3: Cross multiply
    15,500.45x = 21,389.13 × 8,694.77
  4. Step 4: Simplify right side
    15,500.45x = 185,973,458.90
  5. Step 5: Solve for x
    x = 185,973,458.90/15,500.45
  6. Step 6: Final answer
    x = 11,997.94

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Half scale
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Double scale
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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.