Home / 11,769.20-17,637.60-7,809.20

Finding the Fourth Proportional to 11,769.20, 17,637.60 and 7,809.20

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Solution

The fourth proportional to 11,769.20, 17,637.60 and 7,809.20 is: 11,703.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,769.20 : 17,637.60 = 7,809.20 : x
  2. Step 2: Convert to fraction form
    11,769.20/17,637.60 = 7,809.20/x
  3. Step 3: Cross multiply
    11,769.20x = 17,637.60 × 7,809.20
  4. Step 4: Simplify right side
    11,769.20x = 137,735,545.92
  5. Step 5: Solve for x
    x = 137,735,545.92/11,769.20
  6. Step 6: Final answer
    x = 11,703.05

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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.