Home / 39,831.05-54,966.42-21,925.68

Finding the Fourth Proportional to 39,831.05, 54,966.42 and 21,925.68

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Solution

The fourth proportional to 39,831.05, 54,966.42 and 21,925.68 is: 30,257.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,831.05 : 54,966.42 = 21,925.68 : x
  2. Step 2: Convert to fraction form
    39,831.05/54,966.42 = 21,925.68/x
  3. Step 3: Cross multiply
    39,831.05x = 54,966.42 × 21,925.68
  4. Step 4: Simplify right side
    39,831.05x = 1,205,176,135.67
  5. Step 5: Solve for x
    x = 1,205,176,135.67/39,831.05
  6. Step 6: Final answer
    x = 30,257.21

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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.