Home / 20,260.18-27,960.45-11,309.43

Finding the Fourth Proportional to 20,260.18, 27,960.45 and 11,309.43

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Solution

The fourth proportional to 20,260.18, 27,960.45 and 11,309.43 is: 15,607.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,260.18 : 27,960.45 = 11,309.43 : x
  2. Step 2: Convert to fraction form
    20,260.18/27,960.45 = 11,309.43/x
  3. Step 3: Cross multiply
    20,260.18x = 27,960.45 × 11,309.43
  4. Step 4: Simplify right side
    20,260.18x = 316,216,752.04
  5. Step 5: Solve for x
    x = 316,216,752.04/20,260.18
  6. Step 6: Final answer
    x = 15,607.80

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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.