Home / 18,278.19-27,428.57-7,182.93

Finding the Fourth Proportional to 18,278.19, 27,428.57 and 7,182.93

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Solution

The fourth proportional to 18,278.19, 27,428.57 and 7,182.93 is: 10,778.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.19 : 27,428.57 = 7,182.93 : x
  2. Step 2: Convert to fraction form
    18,278.19/27,428.57 = 7,182.93/x
  3. Step 3: Cross multiply
    18,278.19x = 27,428.57 × 7,182.93
  4. Step 4: Simplify right side
    18,278.19x = 197,017,462.40
  5. Step 5: Solve for x
    x = 197,017,462.40/18,278.19
  6. Step 6: Final answer
    x = 10,778.83

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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.