Home / 12,143.40-18,208.92-5,563.92

Finding the Fourth Proportional to 12,143.40, 18,208.92 and 5,563.92

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Solution

The fourth proportional to 12,143.40, 18,208.92 and 5,563.92 is: 8,343.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.40 : 18,208.92 = 5,563.92 : x
  2. Step 2: Convert to fraction form
    12,143.40/18,208.92 = 5,563.92/x
  3. Step 3: Cross multiply
    12,143.40x = 18,208.92 × 5,563.92
  4. Step 4: Simplify right side
    12,143.40x = 101,312,974.17
  5. Step 5: Solve for x
    x = 101,312,974.17/12,143.40
  6. Step 6: Final answer
    x = 8,343.05

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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.