Home / 31,387.23-43,348.37-19,478.97

Finding the Fourth Proportional to 31,387.23, 43,348.37 and 19,478.97

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Solution

The fourth proportional to 31,387.23, 43,348.37 and 19,478.97 is: 26,902.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,387.23 : 43,348.37 = 19,478.97 : x
  2. Step 2: Convert to fraction form
    31,387.23/43,348.37 = 19,478.97/x
  3. Step 3: Cross multiply
    31,387.23x = 43,348.37 × 19,478.97
  4. Step 4: Simplify right side
    31,387.23x = 844,381,501.38
  5. Step 5: Solve for x
    x = 844,381,501.38/31,387.23
  6. Step 6: Final answer
    x = 26,902.07

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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.