Home / 31,398.32-47,037.72-18,722

Finding the Fourth Proportional to 31,398.32, 47,037.72 and 18,722

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Solution

The fourth proportional to 31,398.32, 47,037.72 and 18,722 is: 28,047.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,398.32 : 47,037.72 = 18,722 : x
  2. Step 2: Convert to fraction form
    31,398.32/47,037.72 = 18,722/x
  3. Step 3: Cross multiply
    31,398.32x = 47,037.72 × 18,722
  4. Step 4: Simplify right side
    31,398.32x = 880,640,193.84
  5. Step 5: Solve for x
    x = 880,640,193.84/31,398.32
  6. Step 6: Final answer
    x = 28,047.37

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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.