Home / 14,651.76-20,218.22-8,278.91

Finding the Fourth Proportional to 14,651.76, 20,218.22 and 8,278.91

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Solution

The fourth proportional to 14,651.76, 20,218.22 and 8,278.91 is: 11,424.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,651.76 : 20,218.22 = 8,278.91 : x
  2. Step 2: Convert to fraction form
    14,651.76/20,218.22 = 8,278.91/x
  3. Step 3: Cross multiply
    14,651.76x = 20,218.22 × 8,278.91
  4. Step 4: Simplify right side
    14,651.76x = 167,384,681.25
  5. Step 5: Solve for x
    x = 167,384,681.25/14,651.76
  6. Step 6: Final answer
    x = 11,424.20

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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.