Home / 40,118.07-55,363.80-21,969.56

Finding the Fourth Proportional to 40,118.07, 55,363.80 and 21,969.56

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Solution

The fourth proportional to 40,118.07, 55,363.80 and 21,969.56 is: 30,318.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,118.07 : 55,363.80 = 21,969.56 : x
  2. Step 2: Convert to fraction form
    40,118.07/55,363.80 = 21,969.56/x
  3. Step 3: Cross multiply
    40,118.07x = 55,363.80 × 21,969.56
  4. Step 4: Simplify right side
    40,118.07x = 1,216,318,546.72
  5. Step 5: Solve for x
    x = 1,216,318,546.72/40,118.07
  6. Step 6: Final answer
    x = 30,318.47

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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.