Home / 31,715.45-47,497.39-17,640.53

Finding the Fourth Proportional to 31,715.45, 47,497.39 and 17,640.53

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Solution

The fourth proportional to 31,715.45, 47,497.39 and 17,640.53 is: 26,418.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,715.45 : 47,497.39 = 17,640.53 : x
  2. Step 2: Convert to fraction form
    31,715.45/47,497.39 = 17,640.53/x
  3. Step 3: Cross multiply
    31,715.45x = 47,497.39 × 17,640.53
  4. Step 4: Simplify right side
    31,715.45x = 837,879,296.92
  5. Step 5: Solve for x
    x = 837,879,296.92/31,715.45
  6. Step 6: Final answer
    x = 26,418.65

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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.