Home / 38,721.41-53,433.65-21,951.17

Finding the Fourth Proportional to 38,721.41, 53,433.65 and 21,951.17

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Solution

The fourth proportional to 38,721.41, 53,433.65 and 21,951.17 is: 30,291.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,721.41 : 53,433.65 = 21,951.17 : x
  2. Step 2: Convert to fraction form
    38,721.41/53,433.65 = 21,951.17/x
  3. Step 3: Cross multiply
    38,721.41x = 53,433.65 × 21,951.17
  4. Step 4: Simplify right side
    38,721.41x = 1,172,931,025.11
  5. Step 5: Solve for x
    x = 1,172,931,025.11/38,721.41
  6. Step 6: Final answer
    x = 30,291.54

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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.