Home / 14,385.20-19,851.86-8,719.76

Finding the Fourth Proportional to 14,385.20, 19,851.86 and 8,719.76

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Solution

The fourth proportional to 14,385.20, 19,851.86 and 8,719.76 is: 12,033.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,385.20 : 19,851.86 = 8,719.76 : x
  2. Step 2: Convert to fraction form
    14,385.20/19,851.86 = 8,719.76/x
  3. Step 3: Cross multiply
    14,385.20x = 19,851.86 × 8,719.76
  4. Step 4: Simplify right side
    14,385.20x = 173,103,454.75
  5. Step 5: Solve for x
    x = 173,103,454.75/14,385.20
  6. Step 6: Final answer
    x = 12,033.44

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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.