Home / 12,140.40-18,199.81-4,743.17

Finding the Fourth Proportional to 12,140.40, 18,199.81 and 4,743.17

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Solution

The fourth proportional to 12,140.40, 18,199.81 and 4,743.17 is: 7,110.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140.40 : 18,199.81 = 4,743.17 : x
  2. Step 2: Convert to fraction form
    12,140.40/18,199.81 = 4,743.17/x
  3. Step 3: Cross multiply
    12,140.40x = 18,199.81 × 4,743.17
  4. Step 4: Simplify right side
    12,140.40x = 86,324,851.67
  5. Step 5: Solve for x
    x = 86,324,851.67/12,140.40
  6. Step 6: Final answer
    x = 7,110.55

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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.