Home / 10,503.90-15,759.19-3,108.40

Finding the Fourth Proportional to 10,503.90, 15,759.19 and 3,108.40

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Solution

The fourth proportional to 10,503.90, 15,759.19 and 3,108.40 is: 4,663.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,503.90 : 15,759.19 = 3,108.40 : x
  2. Step 2: Convert to fraction form
    10,503.90/15,759.19 = 3,108.40/x
  3. Step 3: Cross multiply
    10,503.90x = 15,759.19 × 3,108.40
  4. Step 4: Simplify right side
    10,503.90x = 48,985,866.20
  5. Step 5: Solve for x
    x = 48,985,866.20/10,503.90
  6. Step 6: Final answer
    x = 4,663.59

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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.