Home / 31,877.91-43,988.83-18,450.05

Finding the Fourth Proportional to 31,877.91, 43,988.83 and 18,450.05

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Solution

The fourth proportional to 31,877.91, 43,988.83 and 18,450.05 is: 25,459.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,877.91 : 43,988.83 = 18,450.05 : x
  2. Step 2: Convert to fraction form
    31,877.91/43,988.83 = 18,450.05/x
  3. Step 3: Cross multiply
    31,877.91x = 43,988.83 × 18,450.05
  4. Step 4: Simplify right side
    31,877.91x = 811,595,846.87
  5. Step 5: Solve for x
    x = 811,595,846.87/31,877.91
  6. Step 6: Final answer
    x = 25,459.51

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1.5x scale

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.