Home / 20,521.40-30,769.24-8,669.08

Finding the Fourth Proportional to 20,521.40, 30,769.24 and 8,669.08

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Solution

The fourth proportional to 20,521.40, 30,769.24 and 8,669.08 is: 12,998.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521.40 : 30,769.24 = 8,669.08 : x
  2. Step 2: Convert to fraction form
    20,521.40/30,769.24 = 8,669.08/x
  3. Step 3: Cross multiply
    20,521.40x = 30,769.24 × 8,669.08
  4. Step 4: Simplify right side
    20,521.40x = 266,741,003.10
  5. Step 5: Solve for x
    x = 266,741,003.10/20,521.40
  6. Step 6: Final answer
    x = 12,998.19

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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.