Home / 31,501.71-43,470.68-18,769.32

Finding the Fourth Proportional to 31,501.71, 43,470.68 and 18,769.32

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Solution

The fourth proportional to 31,501.71, 43,470.68 and 18,769.32 is: 25,900.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,501.71 : 43,470.68 = 18,769.32 : x
  2. Step 2: Convert to fraction form
    31,501.71/43,470.68 = 18,769.32/x
  3. Step 3: Cross multiply
    31,501.71x = 43,470.68 × 18,769.32
  4. Step 4: Simplify right side
    31,501.71x = 815,915,009.69
  5. Step 5: Solve for x
    x = 815,915,009.69/31,501.71
  6. Step 6: Final answer
    x = 25,900.66

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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.