Home / 20,818.67-31,228.02-5,236.29

Finding the Fourth Proportional to 20,818.67, 31,228.02 and 5,236.29

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Solution

The fourth proportional to 20,818.67, 31,228.02 and 5,236.29 is: 7,854.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,818.67 : 31,228.02 = 5,236.29 : x
  2. Step 2: Convert to fraction form
    20,818.67/31,228.02 = 5,236.29/x
  3. Step 3: Cross multiply
    20,818.67x = 31,228.02 × 5,236.29
  4. Step 4: Simplify right side
    20,818.67x = 163,518,968.85
  5. Step 5: Solve for x
    x = 163,518,968.85/20,818.67
  6. Step 6: Final answer
    x = 7,854.44

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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.