Home / 20,132.13-30,206.72-10,769.69

Finding the Fourth Proportional to 20,132.13, 30,206.72 and 10,769.69

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Solution

The fourth proportional to 20,132.13, 30,206.72 and 10,769.69 is: 16,159.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.13 : 30,206.72 = 10,769.69 : x
  2. Step 2: Convert to fraction form
    20,132.13/30,206.72 = 10,769.69/x
  3. Step 3: Cross multiply
    20,132.13x = 30,206.72 × 10,769.69
  4. Step 4: Simplify right side
    20,132.13x = 325,317,010.32
  5. Step 5: Solve for x
    x = 325,317,010.32/20,132.13
  6. Step 6: Final answer
    x = 16,159.10

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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.