Home / 31,806.56-43,895.04-18,380.28

Finding the Fourth Proportional to 31,806.56, 43,895.04 and 18,380.28

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Solution

The fourth proportional to 31,806.56, 43,895.04 and 18,380.28 is: 25,365.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,806.56 : 43,895.04 = 18,380.28 : x
  2. Step 2: Convert to fraction form
    31,806.56/43,895.04 = 18,380.28/x
  3. Step 3: Cross multiply
    31,806.56x = 43,895.04 × 18,380.28
  4. Step 4: Simplify right side
    31,806.56x = 806,803,125.81
  5. Step 5: Solve for x
    x = 806,803,125.81/31,806.56
  6. Step 6: Final answer
    x = 25,365.93

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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.