Home / 12,426.28-18,639.36-11,803.36

Finding the Fourth Proportional to 12,426.28, 18,639.36 and 11,803.36

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Solution

The fourth proportional to 12,426.28, 18,639.36 and 11,803.36 is: 17,704.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,426.28 : 18,639.36 = 11,803.36 : x
  2. Step 2: Convert to fraction form
    12,426.28/18,639.36 = 11,803.36/x
  3. Step 3: Cross multiply
    12,426.28x = 18,639.36 × 11,803.36
  4. Step 4: Simplify right side
    12,426.28x = 220,007,076.25
  5. Step 5: Solve for x
    x = 220,007,076.25/12,426.28
  6. Step 6: Final answer
    x = 17,704.98

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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.