Home / 36,185.28-54,278.04-12,812.40

Finding the Fourth Proportional to 36,185.28, 54,278.04 and 12,812.40

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Solution

The fourth proportional to 36,185.28, 54,278.04 and 12,812.40 is: 19,218.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,185.28 : 54,278.04 = 12,812.40 : x
  2. Step 2: Convert to fraction form
    36,185.28/54,278.04 = 12,812.40/x
  3. Step 3: Cross multiply
    36,185.28x = 54,278.04 × 12,812.40
  4. Step 4: Simplify right side
    36,185.28x = 695,431,959.70
  5. Step 5: Solve for x
    x = 695,431,959.70/36,185.28
  6. Step 6: Final answer
    x = 19,218.64

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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.