Home / 31,505.24-47,257.29-7,812.74

Finding the Fourth Proportional to 31,505.24, 47,257.29 and 7,812.74

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Solution

The fourth proportional to 31,505.24, 47,257.29 and 7,812.74 is: 11,718.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,505.24 : 47,257.29 = 7,812.74 : x
  2. Step 2: Convert to fraction form
    31,505.24/47,257.29 = 7,812.74/x
  3. Step 3: Cross multiply
    31,505.24x = 47,257.29 × 7,812.74
  4. Step 4: Simplify right side
    31,505.24x = 369,208,919.87
  5. Step 5: Solve for x
    x = 369,208,919.87/31,505.24
  6. Step 6: Final answer
    x = 11,718.97

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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.