Home / 12,191.36-18,287.75-3,426.95

Finding the Fourth Proportional to 12,191.36, 18,287.75 and 3,426.95

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Solution

The fourth proportional to 12,191.36, 18,287.75 and 3,426.95 is: 5,140.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,191.36 : 18,287.75 = 3,426.95 : x
  2. Step 2: Convert to fraction form
    12,191.36/18,287.75 = 3,426.95/x
  3. Step 3: Cross multiply
    12,191.36x = 18,287.75 × 3,426.95
  4. Step 4: Simplify right side
    12,191.36x = 62,671,233.45
  5. Step 5: Solve for x
    x = 62,671,233.45/12,191.36
  6. Step 6: Final answer
    x = 5,140.63

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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.