Home / 31,789.68-43,877.67-18,368.70

Finding the Fourth Proportional to 31,789.68, 43,877.67 and 18,368.70

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Solution

The fourth proportional to 31,789.68, 43,877.67 and 18,368.70 is: 25,353.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,789.68 : 43,877.67 = 18,368.70 : x
  2. Step 2: Convert to fraction form
    31,789.68/43,877.67 = 18,368.70/x
  3. Step 3: Cross multiply
    31,789.68x = 43,877.67 × 18,368.70
  4. Step 4: Simplify right side
    31,789.68x = 805,975,756.93
  5. Step 5: Solve for x
    x = 805,975,756.93/31,789.68
  6. Step 6: Final answer
    x = 25,353.38

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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.