Home / 10,876.75-16,315.13-4,720.75

Finding the Fourth Proportional to 10,876.75, 16,315.13 and 4,720.75

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Solution

The fourth proportional to 10,876.75, 16,315.13 and 4,720.75 is: 7,081.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,876.75 : 16,315.13 = 4,720.75 : x
  2. Step 2: Convert to fraction form
    10,876.75/16,315.13 = 4,720.75/x
  3. Step 3: Cross multiply
    10,876.75x = 16,315.13 × 4,720.75
  4. Step 4: Simplify right side
    10,876.75x = 77,019,649.95
  5. Step 5: Solve for x
    x = 77,019,649.95/10,876.75
  6. Step 6: Final answer
    x = 7,081.13

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1.5x scale

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.