Home / 19,900.20-27,462.07-10,947.71

Finding the Fourth Proportional to 19,900.20, 27,462.07 and 10,947.71

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Solution

The fourth proportional to 19,900.20, 27,462.07 and 10,947.71 is: 15,107.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,900.20 : 27,462.07 = 10,947.71 : x
  2. Step 2: Convert to fraction form
    19,900.20/27,462.07 = 10,947.71/x
  3. Step 3: Cross multiply
    19,900.20x = 27,462.07 × 10,947.71
  4. Step 4: Simplify right side
    19,900.20x = 300,646,706.23
  5. Step 5: Solve for x
    x = 300,646,706.23/19,900.20
  6. Step 6: Final answer
    x = 15,107.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.