Home / 13,465.68-20,198.40-5,143.76

Finding the Fourth Proportional to 13,465.68, 20,198.40 and 5,143.76

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Solution

The fourth proportional to 13,465.68, 20,198.40 and 5,143.76 is: 7,715.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,465.68 : 20,198.40 = 5,143.76 : x
  2. Step 2: Convert to fraction form
    13,465.68/20,198.40 = 5,143.76/x
  3. Step 3: Cross multiply
    13,465.68x = 20,198.40 × 5,143.76
  4. Step 4: Simplify right side
    13,465.68x = 103,895,721.98
  5. Step 5: Solve for x
    x = 103,895,721.98/13,465.68
  6. Step 6: Final answer
    x = 7,715.59

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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.