Home / 31,376.96-43,301.76-18,630.80

Finding the Fourth Proportional to 31,376.96, 43,301.76 and 18,630.80

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Solution

The fourth proportional to 31,376.96, 43,301.76 and 18,630.80 is: 25,711.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,376.96 : 43,301.76 = 18,630.80 : x
  2. Step 2: Convert to fraction form
    31,376.96/43,301.76 = 18,630.80/x
  3. Step 3: Cross multiply
    31,376.96x = 43,301.76 × 18,630.80
  4. Step 4: Simplify right side
    31,376.96x = 806,746,430.21
  5. Step 5: Solve for x
    x = 806,746,430.21/31,376.96
  6. Step 6: Final answer
    x = 25,711.43

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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.