Home / 14,961.73-20,639.59-11,418.79

Finding the Fourth Proportional to 14,961.73, 20,639.59 and 11,418.79

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Solution

The fourth proportional to 14,961.73, 20,639.59 and 11,418.79 is: 15,752.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,961.73 : 20,639.59 = 11,418.79 : x
  2. Step 2: Convert to fraction form
    14,961.73/20,639.59 = 11,418.79/x
  3. Step 3: Cross multiply
    14,961.73x = 20,639.59 × 11,418.79
  4. Step 4: Simplify right side
    14,961.73x = 235,679,143.90
  5. Step 5: Solve for x
    x = 235,679,143.90/14,961.73
  6. Step 6: Final answer
    x = 15,752.13

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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.