Home / 31,769.22-43,823.16-19,811.80

Finding the Fourth Proportional to 31,769.22, 43,823.16 and 19,811.80

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Solution

The fourth proportional to 31,769.22, 43,823.16 and 19,811.80 is: 27,328.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,769.22 : 43,823.16 = 19,811.80 : x
  2. Step 2: Convert to fraction form
    31,769.22/43,823.16 = 19,811.80/x
  3. Step 3: Cross multiply
    31,769.22x = 43,823.16 × 19,811.80
  4. Step 4: Simplify right side
    31,769.22x = 868,215,681.29
  5. Step 5: Solve for x
    x = 868,215,681.29/31,769.22
  6. Step 6: Final answer
    x = 27,328.83

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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.