Home / 20,864.63-31,297.08-5,282.25

Finding the Fourth Proportional to 20,864.63, 31,297.08 and 5,282.25

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Solution

The fourth proportional to 20,864.63, 31,297.08 and 5,282.25 is: 7,923.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.63 : 31,297.08 = 5,282.25 : x
  2. Step 2: Convert to fraction form
    20,864.63/31,297.08 = 5,282.25/x
  3. Step 3: Cross multiply
    20,864.63x = 31,297.08 × 5,282.25
  4. Step 4: Simplify right side
    20,864.63x = 165,319,000.83
  5. Step 5: Solve for x
    x = 165,319,000.83/20,864.63
  6. Step 6: Final answer
    x = 7,923.41

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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.