Home / 31,132.91-46,721.81-12,402.11

Finding the Fourth Proportional to 31,132.91, 46,721.81 and 12,402.11

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Solution

The fourth proportional to 31,132.91, 46,721.81 and 12,402.11 is: 18,612.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,132.91 : 46,721.81 = 12,402.11 : x
  2. Step 2: Convert to fraction form
    31,132.91/46,721.81 = 12,402.11/x
  3. Step 3: Cross multiply
    31,132.91x = 46,721.81 × 12,402.11
  4. Step 4: Simplify right side
    31,132.91x = 579,449,027.02
  5. Step 5: Solve for x
    x = 579,449,027.02/31,132.91
  6. Step 6: Final answer
    x = 18,612.11

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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.