Home / 19,109.20-28,663.80-18,015.70

Finding the Fourth Proportional to 19,109.20, 28,663.80 and 18,015.70

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Solution

The fourth proportional to 19,109.20, 28,663.80 and 18,015.70 is: 27,023.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,109.20 : 28,663.80 = 18,015.70 : x
  2. Step 2: Convert to fraction form
    19,109.20/28,663.80 = 18,015.70/x
  3. Step 3: Cross multiply
    19,109.20x = 28,663.80 × 18,015.70
  4. Step 4: Simplify right side
    19,109.20x = 516,398,421.66
  5. Step 5: Solve for x
    x = 516,398,421.66/19,109.20
  6. Step 6: Final answer
    x = 27,023.55

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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.