Home / 19,180.80-28,769.04-8,089.20

Finding the Fourth Proportional to 19,180.80, 28,769.04 and 8,089.20

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Solution

The fourth proportional to 19,180.80, 28,769.04 and 8,089.20 is: 12,132.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,180.80 : 28,769.04 = 8,089.20 : x
  2. Step 2: Convert to fraction form
    19,180.80/28,769.04 = 8,089.20/x
  3. Step 3: Cross multiply
    19,180.80x = 28,769.04 × 8,089.20
  4. Step 4: Simplify right side
    19,180.80x = 232,718,518.37
  5. Step 5: Solve for x
    x = 232,718,518.37/19,180.80
  6. Step 6: Final answer
    x = 12,132.89

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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.