Home / 31,761.11-43,831.33-18,332.12

Finding the Fourth Proportional to 31,761.11, 43,831.33 and 18,332.12

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Solution

The fourth proportional to 31,761.11, 43,831.33 and 18,332.12 is: 25,298.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,761.11 : 43,831.33 = 18,332.12 : x
  2. Step 2: Convert to fraction form
    31,761.11/43,831.33 = 18,332.12/x
  3. Step 3: Cross multiply
    31,761.11x = 43,831.33 × 18,332.12
  4. Step 4: Simplify right side
    31,761.11x = 803,521,265.07
  5. Step 5: Solve for x
    x = 803,521,265.07/31,761.11
  6. Step 6: Final answer
    x = 25,298.90

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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.