Home / 27,831.61-38,376.71-21,443.95

Finding the Fourth Proportional to 27,831.61, 38,376.71 and 21,443.95

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Solution

The fourth proportional to 27,831.61, 38,376.71 and 21,443.95 is: 29,568.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,831.61 : 38,376.71 = 21,443.95 : x
  2. Step 2: Convert to fraction form
    27,831.61/38,376.71 = 21,443.95/x
  3. Step 3: Cross multiply
    27,831.61x = 38,376.71 × 21,443.95
  4. Step 4: Simplify right side
    27,831.61x = 822,948,208.07
  5. Step 5: Solve for x
    x = 822,948,208.07/27,831.61
  6. Step 6: Final answer
    x = 29,568.83

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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.