Home / 31,435.76-43,375.56-18,693.20

Finding the Fourth Proportional to 31,435.76, 43,375.56 and 18,693.20

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Solution

The fourth proportional to 31,435.76, 43,375.56 and 18,693.20 is: 25,793.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,435.76 : 43,375.56 = 18,693.20 : x
  2. Step 2: Convert to fraction form
    31,435.76/43,375.56 = 18,693.20/x
  3. Step 3: Cross multiply
    31,435.76x = 43,375.56 × 18,693.20
  4. Step 4: Simplify right side
    31,435.76x = 810,828,018.19
  5. Step 5: Solve for x
    x = 810,828,018.19/31,435.76
  6. Step 6: Final answer
    x = 25,793.17

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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.