Home / 38,315.10-52,873.48-21,318.78

Finding the Fourth Proportional to 38,315.10, 52,873.48 and 21,318.78

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Solution

The fourth proportional to 38,315.10, 52,873.48 and 21,318.78 is: 29,419.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,315.10 : 52,873.48 = 21,318.78 : x
  2. Step 2: Convert to fraction form
    38,315.10/52,873.48 = 21,318.78/x
  3. Step 3: Cross multiply
    38,315.10x = 52,873.48 × 21,318.78
  4. Step 4: Simplify right side
    38,315.10x = 1,127,198,087.95
  5. Step 5: Solve for x
    x = 1,127,198,087.95/38,315.10
  6. Step 6: Final answer
    x = 29,419.16

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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.