Home / 38,817.57-53,565.30-21,819.11

Finding the Fourth Proportional to 38,817.57, 53,565.30 and 21,819.11

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Solution

The fourth proportional to 38,817.57, 53,565.30 and 21,819.11 is: 30,108.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,817.57 : 53,565.30 = 21,819.11 : x
  2. Step 2: Convert to fraction form
    38,817.57/53,565.30 = 21,819.11/x
  3. Step 3: Cross multiply
    38,817.57x = 53,565.30 × 21,819.11
  4. Step 4: Simplify right side
    38,817.57x = 1,168,747,224.97
  5. Step 5: Solve for x
    x = 1,168,747,224.97/38,817.57
  6. Step 6: Final answer
    x = 30,108.72

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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.