Home / 31,470.11-43,409.76-19,372.65

Finding the Fourth Proportional to 31,470.11, 43,409.76 and 19,372.65

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Solution

The fourth proportional to 31,470.11, 43,409.76 and 19,372.65 is: 26,722.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,470.11 : 43,409.76 = 19,372.65 : x
  2. Step 2: Convert to fraction form
    31,470.11/43,409.76 = 19,372.65/x
  3. Step 3: Cross multiply
    31,470.11x = 43,409.76 × 19,372.65
  4. Step 4: Simplify right side
    31,470.11x = 840,962,087.06
  5. Step 5: Solve for x
    x = 840,962,087.06/31,470.11
  6. Step 6: Final answer
    x = 26,722.57

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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.