Home / 20,301.80-30,432.54-9,769.64

Finding the Fourth Proportional to 20,301.80, 30,432.54 and 9,769.64

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Solution

The fourth proportional to 20,301.80, 30,432.54 and 9,769.64 is: 14,644.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301.80 : 30,432.54 = 9,769.64 : x
  2. Step 2: Convert to fraction form
    20,301.80/30,432.54 = 9,769.64/x
  3. Step 3: Cross multiply
    20,301.80x = 30,432.54 × 9,769.64
  4. Step 4: Simplify right side
    20,301.80x = 297,314,960.09
  5. Step 5: Solve for x
    x = 297,314,960.09/20,301.80
  6. Step 6: Final answer
    x = 14,644.76

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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.