Home / 38,915.13-58,379.99-18,138.63

Finding the Fourth Proportional to 38,915.13, 58,379.99 and 18,138.63

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Solution

The fourth proportional to 38,915.13, 58,379.99 and 18,138.63 is: 27,211.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,915.13 : 58,379.99 = 18,138.63 : x
  2. Step 2: Convert to fraction form
    38,915.13/58,379.99 = 18,138.63/x
  3. Step 3: Cross multiply
    38,915.13x = 58,379.99 × 18,138.63
  4. Step 4: Simplify right side
    38,915.13x = 1,058,933,038.01
  5. Step 5: Solve for x
    x = 1,058,933,038.01/38,915.13
  6. Step 6: Final answer
    x = 27,211.35

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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.