Home / 15,116.61-20,863.21-10,881.69

Finding the Fourth Proportional to 15,116.61, 20,863.21 and 10,881.69

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Solution

The fourth proportional to 15,116.61, 20,863.21 and 10,881.69 is: 15,018.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,116.61 : 20,863.21 = 10,881.69 : x
  2. Step 2: Convert to fraction form
    15,116.61/20,863.21 = 10,881.69/x
  3. Step 3: Cross multiply
    15,116.61x = 20,863.21 × 10,881.69
  4. Step 4: Simplify right side
    15,116.61x = 227,027,010.83
  5. Step 5: Solve for x
    x = 227,027,010.83/15,116.61
  6. Step 6: Final answer
    x = 15,018.39

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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.