Home / 19,182.80-28,774.20-5,331.80

Finding the Fourth Proportional to 19,182.80, 28,774.20 and 5,331.80

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Solution

The fourth proportional to 19,182.80, 28,774.20 and 5,331.80 is: 7,997.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,182.80 : 28,774.20 = 5,331.80 : x
  2. Step 2: Convert to fraction form
    19,182.80/28,774.20 = 5,331.80/x
  3. Step 3: Cross multiply
    19,182.80x = 28,774.20 × 5,331.80
  4. Step 4: Simplify right side
    19,182.80x = 153,418,279.56
  5. Step 5: Solve for x
    x = 153,418,279.56/19,182.80
  6. Step 6: Final answer
    x = 7,997.70

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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.