Home / 12,108.61-18,162.23-3,787.64

Finding the Fourth Proportional to 12,108.61, 18,162.23 and 3,787.64

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Solution

The fourth proportional to 12,108.61, 18,162.23 and 3,787.64 is: 5,681.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.61 : 18,162.23 = 3,787.64 : x
  2. Step 2: Convert to fraction form
    12,108.61/18,162.23 = 3,787.64/x
  3. Step 3: Cross multiply
    12,108.61x = 18,162.23 × 3,787.64
  4. Step 4: Simplify right side
    12,108.61x = 68,791,969.90
  5. Step 5: Solve for x
    x = 68,791,969.90/12,108.61
  6. Step 6: Final answer
    x = 5,681.24

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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.