Home / 38,981-58,442.30-12,670.04

Finding the Fourth Proportional to 38,981, 58,442.30 and 12,670.04

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Solution

The fourth proportional to 38,981, 58,442.30 and 12,670.04 is: 18,995.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,981 : 58,442.30 = 12,670.04 : x
  2. Step 2: Convert to fraction form
    38,981/58,442.30 = 12,670.04/x
  3. Step 3: Cross multiply
    38,981x = 58,442.30 × 12,670.04
  4. Step 4: Simplify right side
    38,981x = 740,466,278.69
  5. Step 5: Solve for x
    x = 740,466,278.69/38,981
  6. Step 6: Final answer
    x = 18,995.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.