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Finding the Fourth Proportional to 38,190, 52,697.88 and 21,193.68

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Solution

The fourth proportional to 38,190, 52,697.88 and 21,193.68 is: 29,244.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,190 : 52,697.88 = 21,193.68 : x
  2. Step 2: Convert to fraction form
    38,190/52,697.88 = 21,193.68/x
  3. Step 3: Cross multiply
    38,190x = 52,697.88 × 21,193.68
  4. Step 4: Simplify right side
    38,190x = 1,116,862,005.40
  5. Step 5: Solve for x
    x = 1,116,862,005.40/38,190
  6. Step 6: Final answer
    x = 29,244.88

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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.