Home / 19,540.35-26,966.19-11,990.85

Finding the Fourth Proportional to 19,540.35, 26,966.19 and 11,990.85

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Solution

The fourth proportional to 19,540.35, 26,966.19 and 11,990.85 is: 16,547.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,540.35 : 26,966.19 = 11,990.85 : x
  2. Step 2: Convert to fraction form
    19,540.35/26,966.19 = 11,990.85/x
  3. Step 3: Cross multiply
    19,540.35x = 26,966.19 × 11,990.85
  4. Step 4: Simplify right side
    19,540.35x = 323,347,479.41
  5. Step 5: Solve for x
    x = 323,347,479.41/19,540.35
  6. Step 6: Final answer
    x = 16,547.68

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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.