Home / 12,192.40-18,289.28-3,426.63

Finding the Fourth Proportional to 12,192.40, 18,289.28 and 3,426.63

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Solution

The fourth proportional to 12,192.40, 18,289.28 and 3,426.63 is: 5,140.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,192.40 : 18,289.28 = 3,426.63 : x
  2. Step 2: Convert to fraction form
    12,192.40/18,289.28 = 3,426.63/x
  3. Step 3: Cross multiply
    12,192.40x = 18,289.28 × 3,426.63
  4. Step 4: Simplify right side
    12,192.40x = 62,670,595.53
  5. Step 5: Solve for x
    x = 62,670,595.53/12,192.40
  6. Step 6: Final answer
    x = 5,140.14

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