Home / 18,345.24-27,521.42-7,815.08

Finding the Fourth Proportional to 18,345.24, 27,521.42 and 7,815.08

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Solution

The fourth proportional to 18,345.24, 27,521.42 and 7,815.08 is: 11,724.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.24 : 27,521.42 = 7,815.08 : x
  2. Step 2: Convert to fraction form
    18,345.24/27,521.42 = 7,815.08/x
  3. Step 3: Cross multiply
    18,345.24x = 27,521.42 × 7,815.08
  4. Step 4: Simplify right side
    18,345.24x = 215,082,128.74
  5. Step 5: Solve for x
    x = 215,082,128.74/18,345.24
  6. Step 6: Final answer
    x = 11,724.14

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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.