Home / 40,278.88-60,394.56-12,190.40

Finding the Fourth Proportional to 40,278.88, 60,394.56 and 12,190.40

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Solution

The fourth proportional to 40,278.88, 60,394.56 and 12,190.40 is: 18,278.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,278.88 : 60,394.56 = 12,190.40 : x
  2. Step 2: Convert to fraction form
    40,278.88/60,394.56 = 12,190.40/x
  3. Step 3: Cross multiply
    40,278.88x = 60,394.56 × 12,190.40
  4. Step 4: Simplify right side
    40,278.88x = 736,233,844.22
  5. Step 5: Solve for x
    x = 736,233,844.22/40,278.88
  6. Step 6: Final answer
    x = 18,278.41

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1.5x scale

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.