Home / 31,868.91-47,826.28-21,359.02

Finding the Fourth Proportional to 31,868.91, 47,826.28 and 21,359.02

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Solution

The fourth proportional to 31,868.91, 47,826.28 and 21,359.02 is: 32,053.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,868.91 : 47,826.28 = 21,359.02 : x
  2. Step 2: Convert to fraction form
    31,868.91/47,826.28 = 21,359.02/x
  3. Step 3: Cross multiply
    31,868.91x = 47,826.28 × 21,359.02
  4. Step 4: Simplify right side
    31,868.91x = 1,021,522,471.05
  5. Step 5: Solve for x
    x = 1,021,522,471.05/31,868.91
  6. Step 6: Final answer
    x = 32,053.89

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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.