Home / 31,742.32-43,806.48-18,314.12

Finding the Fourth Proportional to 31,742.32, 43,806.48 and 18,314.12

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Solution

The fourth proportional to 31,742.32, 43,806.48 and 18,314.12 is: 25,274.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,742.32 : 43,806.48 = 18,314.12 : x
  2. Step 2: Convert to fraction form
    31,742.32/43,806.48 = 18,314.12/x
  3. Step 3: Cross multiply
    31,742.32x = 43,806.48 × 18,314.12
  4. Step 4: Simplify right side
    31,742.32x = 802,277,131.50
  5. Step 5: Solve for x
    x = 802,277,131.50/31,742.32
  6. Step 6: Final answer
    x = 25,274.68

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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.