Home / 31,874.64-43,990.52-18,445.72

Finding the Fourth Proportional to 31,874.64, 43,990.52 and 18,445.72

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Solution

The fourth proportional to 31,874.64, 43,990.52 and 18,445.72 is: 25,457.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,874.64 : 43,990.52 = 18,445.72 : x
  2. Step 2: Convert to fraction form
    31,874.64/43,990.52 = 18,445.72/x
  3. Step 3: Cross multiply
    31,874.64x = 43,990.52 × 18,445.72
  4. Step 4: Simplify right side
    31,874.64x = 811,436,814.57
  5. Step 5: Solve for x
    x = 811,436,814.57/31,874.64
  6. Step 6: Final answer
    x = 25,457.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.