Home / 40,321.49-55,640.50-22,415.40

Finding the Fourth Proportional to 40,321.49, 55,640.50 and 22,415.40

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Solution

The fourth proportional to 40,321.49, 55,640.50 and 22,415.40 is: 30,931.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,321.49 : 55,640.50 = 22,415.40 : x
  2. Step 2: Convert to fraction form
    40,321.49/55,640.50 = 22,415.40/x
  3. Step 3: Cross multiply
    40,321.49x = 55,640.50 × 22,415.40
  4. Step 4: Simplify right side
    40,321.49x = 1,247,204,007.66
  5. Step 5: Solve for x
    x = 1,247,204,007.66/40,321.49
  6. Step 6: Final answer
    x = 30,931.50

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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.