Home / 20,718.20-28,581.32-14,006.18

Finding the Fourth Proportional to 20,718.20, 28,581.32 and 14,006.18

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Solution

The fourth proportional to 20,718.20, 28,581.32 and 14,006.18 is: 19,321.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.20 : 28,581.32 = 14,006.18 : x
  2. Step 2: Convert to fraction form
    20,718.20/28,581.32 = 14,006.18/x
  3. Step 3: Cross multiply
    20,718.20x = 28,581.32 × 14,006.18
  4. Step 4: Simplify right side
    20,718.20x = 400,315,112.56
  5. Step 5: Solve for x
    x = 400,315,112.56/20,718.20
  6. Step 6: Final answer
    x = 19,321.91

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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.