Home / 20,833.02-31,261.68-8,359.02

Finding the Fourth Proportional to 20,833.02, 31,261.68 and 8,359.02

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Solution

The fourth proportional to 20,833.02, 31,261.68 and 8,359.02 is: 12,543.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.02 : 31,261.68 = 8,359.02 : x
  2. Step 2: Convert to fraction form
    20,833.02/31,261.68 = 8,359.02/x
  3. Step 3: Cross multiply
    20,833.02x = 31,261.68 × 8,359.02
  4. Step 4: Simplify right side
    20,833.02x = 261,317,008.35
  5. Step 5: Solve for x
    x = 261,317,008.35/20,833.02
  6. Step 6: Final answer
    x = 12,543.41

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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.