Home / 20,140.57-30,206.30-7,656.14

Finding the Fourth Proportional to 20,140.57, 30,206.30 and 7,656.14

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Solution

The fourth proportional to 20,140.57, 30,206.30 and 7,656.14 is: 11,482.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.57 : 30,206.30 = 7,656.14 : x
  2. Step 2: Convert to fraction form
    20,140.57/30,206.30 = 7,656.14/x
  3. Step 3: Cross multiply
    20,140.57x = 30,206.30 × 7,656.14
  4. Step 4: Simplify right side
    20,140.57x = 231,263,661.68
  5. Step 5: Solve for x
    x = 231,263,661.68/20,140.57
  6. Step 6: Final answer
    x = 11,482.48

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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.