Home / 20,888.02-31,331.19-8,404.42

Finding the Fourth Proportional to 20,888.02, 31,331.19 and 8,404.42

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Solution

The fourth proportional to 20,888.02, 31,331.19 and 8,404.42 is: 12,606.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.02 : 31,331.19 = 8,404.42 : x
  2. Step 2: Convert to fraction form
    20,888.02/31,331.19 = 8,404.42/x
  3. Step 3: Cross multiply
    20,888.02x = 31,331.19 × 8,404.42
  4. Step 4: Simplify right side
    20,888.02x = 263,320,479.86
  5. Step 5: Solve for x
    x = 263,320,479.86/20,888.02
  6. Step 6: Final answer
    x = 12,606.29

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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.