Home / 11,318.54-15,633.20-9,898.61

Finding the Fourth Proportional to 11,318.54, 15,633.20 and 9,898.61

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Solution

The fourth proportional to 11,318.54, 15,633.20 and 9,898.61 is: 13,671.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,318.54 : 15,633.20 = 9,898.61 : x
  2. Step 2: Convert to fraction form
    11,318.54/15,633.20 = 9,898.61/x
  3. Step 3: Cross multiply
    11,318.54x = 15,633.20 × 9,898.61
  4. Step 4: Simplify right side
    11,318.54x = 154,746,896.43
  5. Step 5: Solve for x
    x = 154,746,896.43/11,318.54
  6. Step 6: Final answer
    x = 13,671.99

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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.