Home / 12,831.46-19,253.28-8,888.78

Finding the Fourth Proportional to 12,831.46, 19,253.28 and 8,888.78

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Solution

The fourth proportional to 12,831.46, 19,253.28 and 8,888.78 is: 13,337.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,831.46 : 19,253.28 = 8,888.78 : x
  2. Step 2: Convert to fraction form
    12,831.46/19,253.28 = 8,888.78/x
  3. Step 3: Cross multiply
    12,831.46x = 19,253.28 × 8,888.78
  4. Step 4: Simplify right side
    12,831.46x = 171,138,170.20
  5. Step 5: Solve for x
    x = 171,138,170.20/12,831.46
  6. Step 6: Final answer
    x = 13,337.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.