Home / 19,920.76-27,490.45-10,968.09

Finding the Fourth Proportional to 19,920.76, 27,490.45 and 10,968.09

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Solution

The fourth proportional to 19,920.76, 27,490.45 and 10,968.09 is: 15,135.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.76 : 27,490.45 = 10,968.09 : x
  2. Step 2: Convert to fraction form
    19,920.76/27,490.45 = 10,968.09/x
  3. Step 3: Cross multiply
    19,920.76x = 27,490.45 × 10,968.09
  4. Step 4: Simplify right side
    19,920.76x = 301,517,729.74
  5. Step 5: Solve for x
    x = 301,517,729.74/19,920.76
  6. Step 6: Final answer
    x = 15,135.85

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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.