Home / 31,055.40-42,831.18-18,468

Finding the Fourth Proportional to 31,055.40, 42,831.18 and 18,468

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Solution

The fourth proportional to 31,055.40, 42,831.18 and 18,468 is: 25,470.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,055.40 : 42,831.18 = 18,468 : x
  2. Step 2: Convert to fraction form
    31,055.40/42,831.18 = 18,468/x
  3. Step 3: Cross multiply
    31,055.40x = 42,831.18 × 18,468
  4. Step 4: Simplify right side
    31,055.40x = 791,006,232.24
  5. Step 5: Solve for x
    x = 791,006,232.24/31,055.40
  6. Step 6: Final answer
    x = 25,470.81

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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.