Home / 20,633.61-28,474.56-11,202.20

Finding the Fourth Proportional to 20,633.61, 28,474.56 and 11,202.20

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Solution

The fourth proportional to 20,633.61, 28,474.56 and 11,202.20 is: 15,459.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.61 : 28,474.56 = 11,202.20 : x
  2. Step 2: Convert to fraction form
    20,633.61/28,474.56 = 11,202.20/x
  3. Step 3: Cross multiply
    20,633.61x = 28,474.56 × 11,202.20
  4. Step 4: Simplify right side
    20,633.61x = 318,977,573.66
  5. Step 5: Solve for x
    x = 318,977,573.66/20,633.61
  6. Step 6: Final answer
    x = 15,459.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.