Home / 14,649.12-20,215.78-7,934.75

Finding the Fourth Proportional to 14,649.12, 20,215.78 and 7,934.75

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Solution

The fourth proportional to 14,649.12, 20,215.78 and 7,934.75 is: 10,949.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,649.12 : 20,215.78 = 7,934.75 : x
  2. Step 2: Convert to fraction form
    14,649.12/20,215.78 = 7,934.75/x
  3. Step 3: Cross multiply
    14,649.12x = 20,215.78 × 7,934.75
  4. Step 4: Simplify right side
    14,649.12x = 160,407,160.36
  5. Step 5: Solve for x
    x = 160,407,160.36/14,649.12
  6. Step 6: Final answer
    x = 10,949.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.