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Finding the Fourth Proportional to 38,394.20, 52,983.02 and 21,398.52

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Solution

The fourth proportional to 38,394.20, 52,983.02 and 21,398.52 is: 29,529.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,394.20 : 52,983.02 = 21,398.52 : x
  2. Step 2: Convert to fraction form
    38,394.20/52,983.02 = 21,398.52/x
  3. Step 3: Cross multiply
    38,394.20x = 52,983.02 × 21,398.52
  4. Step 4: Simplify right side
    38,394.20x = 1,133,758,213.13
  5. Step 5: Solve for x
    x = 1,133,758,213.13/38,394.20
  6. Step 6: Final answer
    x = 29,529.41

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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.