Home / 19,139.68-28,687.65-11,749.44

Finding the Fourth Proportional to 19,139.68, 28,687.65 and 11,749.44

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Solution

The fourth proportional to 19,139.68, 28,687.65 and 11,749.44 is: 17,610.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.68 : 28,687.65 = 11,749.44 : x
  2. Step 2: Convert to fraction form
    19,139.68/28,687.65 = 11,749.44/x
  3. Step 3: Cross multiply
    19,139.68x = 28,687.65 × 11,749.44
  4. Step 4: Simplify right side
    19,139.68x = 337,063,822.42
  5. Step 5: Solve for x
    x = 337,063,822.42/19,139.68
  6. Step 6: Final answer
    x = 17,610.73

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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.