Home / 19,687.20-27,170.76-11,303.52

Finding the Fourth Proportional to 19,687.20, 27,170.76 and 11,303.52

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Solution

The fourth proportional to 19,687.20, 27,170.76 and 11,303.52 is: 15,600.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,687.20 : 27,170.76 = 11,303.52 : x
  2. Step 2: Convert to fraction form
    19,687.20/27,170.76 = 11,303.52/x
  3. Step 3: Cross multiply
    19,687.20x = 27,170.76 × 11,303.52
  4. Step 4: Simplify right side
    19,687.20x = 307,125,229.08
  5. Step 5: Solve for x
    x = 307,125,229.08/19,687.20
  6. Step 6: Final answer
    x = 15,600.25

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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.