Home / 20,864.72-31,298.16-5,282.48

Finding the Fourth Proportional to 20,864.72, 31,298.16 and 5,282.48

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Solution

The fourth proportional to 20,864.72, 31,298.16 and 5,282.48 is: 7,923.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.72 : 31,298.16 = 5,282.48 : x
  2. Step 2: Convert to fraction form
    20,864.72/31,298.16 = 5,282.48/x
  3. Step 3: Cross multiply
    20,864.72x = 31,298.16 × 5,282.48
  4. Step 4: Simplify right side
    20,864.72x = 165,331,904.24
  5. Step 5: Solve for x
    x = 165,331,904.24/20,864.72
  6. Step 6: Final answer
    x = 7,923.99

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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.