Home / 13,700.22-20,535.75-7,119.78

Finding the Fourth Proportional to 13,700.22, 20,535.75 and 7,119.78

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Solution

The fourth proportional to 13,700.22, 20,535.75 and 7,119.78 is: 10,672.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,700.22 : 20,535.75 = 7,119.78 : x
  2. Step 2: Convert to fraction form
    13,700.22/20,535.75 = 7,119.78/x
  3. Step 3: Cross multiply
    13,700.22x = 20,535.75 × 7,119.78
  4. Step 4: Simplify right side
    13,700.22x = 146,210,022.14
  5. Step 5: Solve for x
    x = 146,210,022.14/13,700.22
  6. Step 6: Final answer
    x = 10,672.09

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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.