Home / 40,448.16-60,679.80-13,791.60

Finding the Fourth Proportional to 40,448.16, 60,679.80 and 13,791.60

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Solution

The fourth proportional to 40,448.16, 60,679.80 and 13,791.60 is: 20,689.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,448.16 : 60,679.80 = 13,791.60 : x
  2. Step 2: Convert to fraction form
    40,448.16/60,679.80 = 13,791.60/x
  3. Step 3: Cross multiply
    40,448.16x = 60,679.80 × 13,791.60
  4. Step 4: Simplify right side
    40,448.16x = 836,871,529.68
  5. Step 5: Solve for x
    x = 836,871,529.68/40,448.16
  6. Step 6: Final answer
    x = 20,689.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.