Home / 38,142-52,638.12-21,376.08

Finding the Fourth Proportional to 38,142, 52,638.12 and 21,376.08

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Solution

The fourth proportional to 38,142, 52,638.12 and 21,376.08 is: 29,500.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,142 : 52,638.12 = 21,376.08 : x
  2. Step 2: Convert to fraction form
    38,142/52,638.12 = 21,376.08/x
  3. Step 3: Cross multiply
    38,142x = 52,638.12 × 21,376.08
  4. Step 4: Simplify right side
    38,142x = 1,125,196,664.17
  5. Step 5: Solve for x
    x = 1,125,196,664.17/38,142
  6. Step 6: Final answer
    x = 29,500.20

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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.