Home / 31,719.88-47,528.79-20,653.66

Finding the Fourth Proportional to 31,719.88, 47,528.79 and 20,653.66

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Solution

The fourth proportional to 31,719.88, 47,528.79 and 20,653.66 is: 30,947.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,719.88 : 47,528.79 = 20,653.66 : x
  2. Step 2: Convert to fraction form
    31,719.88/47,528.79 = 20,653.66/x
  3. Step 3: Cross multiply
    31,719.88x = 47,528.79 × 20,653.66
  4. Step 4: Simplify right side
    31,719.88x = 981,643,468.87
  5. Step 5: Solve for x
    x = 981,643,468.87/31,719.88
  6. Step 6: Final answer
    x = 30,947.26

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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.