Home / 12,917.64-17,831.76-8,731.56

Finding the Fourth Proportional to 12,917.64, 17,831.76 and 8,731.56

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Solution

The fourth proportional to 12,917.64, 17,831.76 and 8,731.56 is: 12,053.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,917.64 : 17,831.76 = 8,731.56 : x
  2. Step 2: Convert to fraction form
    12,917.64/17,831.76 = 8,731.56/x
  3. Step 3: Cross multiply
    12,917.64x = 17,831.76 × 8,731.56
  4. Step 4: Simplify right side
    12,917.64x = 155,699,082.35
  5. Step 5: Solve for x
    x = 155,699,082.35/12,917.64
  6. Step 6: Final answer
    x = 12,053.21

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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.