Home / 31,035.28-42,831.84-18,292.42

Finding the Fourth Proportional to 31,035.28, 42,831.84 and 18,292.42

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Solution

The fourth proportional to 31,035.28, 42,831.84 and 18,292.42 is: 25,245.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,035.28 : 42,831.84 = 18,292.42 : x
  2. Step 2: Convert to fraction form
    31,035.28/42,831.84 = 18,292.42/x
  3. Step 3: Cross multiply
    31,035.28x = 42,831.84 × 18,292.42
  4. Step 4: Simplify right side
    31,035.28x = 783,498,006.65
  5. Step 5: Solve for x
    x = 783,498,006.65/31,035.28
  6. Step 6: Final answer
    x = 25,245.40

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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.