Home / 14,649.18-20,215.75-7,934.79

Finding the Fourth Proportional to 14,649.18, 20,215.75 and 7,934.79

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Solution

The fourth proportional to 14,649.18, 20,215.75 and 7,934.79 is: 10,949.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,649.18 : 20,215.75 = 7,934.79 : x
  2. Step 2: Convert to fraction form
    14,649.18/20,215.75 = 7,934.79/x
  3. Step 3: Cross multiply
    14,649.18x = 20,215.75 × 7,934.79
  4. Step 4: Simplify right side
    14,649.18x = 160,407,730.94
  5. Step 5: Solve for x
    x = 160,407,730.94/14,649.18
  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.