Home / 22,831.56-31,511.70-13,272.76

Finding the Fourth Proportional to 22,831.56, 31,511.70 and 13,272.76

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Solution

The fourth proportional to 22,831.56, 31,511.70 and 13,272.76 is: 18,318.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,831.56 : 31,511.70 = 13,272.76 : x
  2. Step 2: Convert to fraction form
    22,831.56/31,511.70 = 13,272.76/x
  3. Step 3: Cross multiply
    22,831.56x = 31,511.70 × 13,272.76
  4. Step 4: Simplify right side
    22,831.56x = 418,247,231.29
  5. Step 5: Solve for x
    x = 418,247,231.29/22,831.56
  6. Step 6: Final answer
    x = 18,318.82

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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.