Home / 10,909.09-16,363.65-3,117.90

Finding the Fourth Proportional to 10,909.09, 16,363.65 and 3,117.90

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Solution

The fourth proportional to 10,909.09, 16,363.65 and 3,117.90 is: 4,676.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,909.09 : 16,363.65 = 3,117.90 : x
  2. Step 2: Convert to fraction form
    10,909.09/16,363.65 = 3,117.90/x
  3. Step 3: Cross multiply
    10,909.09x = 16,363.65 × 3,117.90
  4. Step 4: Simplify right side
    10,909.09x = 51,020,224.34
  5. Step 5: Solve for x
    x = 51,020,224.34/10,909.09
  6. Step 6: Final answer
    x = 4,676.85

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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.