Home / 20,865.02-31,297.66-5,282.70

Finding the Fourth Proportional to 20,865.02, 31,297.66 and 5,282.70

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Solution

The fourth proportional to 20,865.02, 31,297.66 and 5,282.70 is: 7,924.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.02 : 31,297.66 = 5,282.70 : x
  2. Step 2: Convert to fraction form
    20,865.02/31,297.66 = 5,282.70/x
  3. Step 3: Cross multiply
    20,865.02x = 31,297.66 × 5,282.70
  4. Step 4: Simplify right side
    20,865.02x = 165,336,148.48
  5. Step 5: Solve for x
    x = 165,336,148.48/20,865.02
  6. Step 6: Final answer
    x = 7,924.08

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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.