Home / 31,863.96-47,736-18,677.16

Finding the Fourth Proportional to 31,863.96, 47,736 and 18,677.16

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Solution

The fourth proportional to 31,863.96, 47,736 and 18,677.16 is: 27,980.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,863.96 : 47,736 = 18,677.16 : x
  2. Step 2: Convert to fraction form
    31,863.96/47,736 = 18,677.16/x
  3. Step 3: Cross multiply
    31,863.96x = 47,736 × 18,677.16
  4. Step 4: Simplify right side
    31,863.96x = 891,572,909.76
  5. Step 5: Solve for x
    x = 891,572,909.76/31,863.96
  6. Step 6: Final answer
    x = 27,980.61

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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.