Home / 40,118.15-55,363.91-21,969.64

Finding the Fourth Proportional to 40,118.15, 55,363.91 and 21,969.64

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Solution

The fourth proportional to 40,118.15, 55,363.91 and 21,969.64 is: 30,318.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,118.15 : 55,363.91 = 21,969.64 : x
  2. Step 2: Convert to fraction form
    40,118.15/55,363.91 = 21,969.64/x
  3. Step 3: Cross multiply
    40,118.15x = 55,363.91 × 21,969.64
  4. Step 4: Simplify right side
    40,118.15x = 1,216,324,894.87
  5. Step 5: Solve for x
    x = 1,216,324,894.87/40,118.15
  6. Step 6: Final answer
    x = 30,318.57

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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.