Home / 31,400.40-47,057.72-15,828.56

Finding the Fourth Proportional to 31,400.40, 47,057.72 and 15,828.56

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Solution

The fourth proportional to 31,400.40, 47,057.72 and 15,828.56 is: 23,721.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,400.40 : 47,057.72 = 15,828.56 : x
  2. Step 2: Convert to fraction form
    31,400.40/47,057.72 = 15,828.56/x
  3. Step 3: Cross multiply
    31,400.40x = 47,057.72 × 15,828.56
  4. Step 4: Simplify right side
    31,400.40x = 744,855,944.48
  5. Step 5: Solve for x
    x = 744,855,944.48/31,400.40
  6. Step 6: Final answer
    x = 23,721.22

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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.