Home / 12,436.25-18,660.85-5,509.13

Finding the Fourth Proportional to 12,436.25, 18,660.85 and 5,509.13

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Solution

The fourth proportional to 12,436.25, 18,660.85 and 5,509.13 is: 8,266.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,436.25 : 18,660.85 = 5,509.13 : x
  2. Step 2: Convert to fraction form
    12,436.25/18,660.85 = 5,509.13/x
  3. Step 3: Cross multiply
    12,436.25x = 18,660.85 × 5,509.13
  4. Step 4: Simplify right side
    12,436.25x = 102,804,941.48
  5. Step 5: Solve for x
    x = 102,804,941.48/12,436.25
  6. Step 6: Final answer
    x = 8,266.56

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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.