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Finding the Fourth Proportional to 38,711.40, 53,420.22 and 21,944.04

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Solution

The fourth proportional to 38,711.40, 53,420.22 and 21,944.04 is: 30,281.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,711.40 : 53,420.22 = 21,944.04 : x
  2. Step 2: Convert to fraction form
    38,711.40/53,420.22 = 21,944.04/x
  3. Step 3: Cross multiply
    38,711.40x = 53,420.22 × 21,944.04
  4. Step 4: Simplify right side
    38,711.40x = 1,172,255,444.49
  5. Step 5: Solve for x
    x = 1,172,255,444.49/38,711.40
  6. Step 6: Final answer
    x = 30,281.92

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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.