Home / 12,143.61-16,758.18-6,838.32

Finding the Fourth Proportional to 12,143.61, 16,758.18 and 6,838.32

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Solution

The fourth proportional to 12,143.61, 16,758.18 and 6,838.32 is: 9,436.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.61 : 16,758.18 = 6,838.32 : x
  2. Step 2: Convert to fraction form
    12,143.61/16,758.18 = 6,838.32/x
  3. Step 3: Cross multiply
    12,143.61x = 16,758.18 × 6,838.32
  4. Step 4: Simplify right side
    12,143.61x = 114,597,797.46
  5. Step 5: Solve for x
    x = 114,597,797.46/12,143.61
  6. Step 6: Final answer
    x = 9,436.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.