Home / 19,900.47-27,462.78-10,947.75

Finding the Fourth Proportional to 19,900.47, 27,462.78 and 10,947.75

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Solution

The fourth proportional to 19,900.47, 27,462.78 and 10,947.75 is: 15,107.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,900.47 : 27,462.78 = 10,947.75 : x
  2. Step 2: Convert to fraction form
    19,900.47/27,462.78 = 10,947.75/x
  3. Step 3: Cross multiply
    19,900.47x = 27,462.78 × 10,947.75
  4. Step 4: Simplify right side
    19,900.47x = 300,655,649.75
  5. Step 5: Solve for x
    x = 300,655,649.75/19,900.47
  6. Step 6: Final answer
    x = 15,107.97

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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.