Home / 18,342.80-27,528.06-12,717.28

Finding the Fourth Proportional to 18,342.80, 27,528.06 and 12,717.28

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Solution

The fourth proportional to 18,342.80, 27,528.06 and 12,717.28 is: 19,085.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342.80 : 27,528.06 = 12,717.28 : x
  2. Step 2: Convert to fraction form
    18,342.80/27,528.06 = 12,717.28/x
  3. Step 3: Cross multiply
    18,342.80x = 27,528.06 × 12,717.28
  4. Step 4: Simplify right side
    18,342.80x = 350,082,046.88
  5. Step 5: Solve for x
    x = 350,082,046.88/18,342.80
  6. Step 6: Final answer
    x = 19,085.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.