Home / 12,322.32-18,490.76-6,479.38

Finding the Fourth Proportional to 12,322.32, 18,490.76 and 6,479.38

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Solution

The fourth proportional to 12,322.32, 18,490.76 and 6,479.38 is: 9,722.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,322.32 : 18,490.76 = 6,479.38 : x
  2. Step 2: Convert to fraction form
    12,322.32/18,490.76 = 6,479.38/x
  3. Step 3: Cross multiply
    12,322.32x = 18,490.76 × 6,479.38
  4. Step 4: Simplify right side
    12,322.32x = 119,808,660.53
  5. Step 5: Solve for x
    x = 119,808,660.53/12,322.32
  6. Step 6: Final answer
    x = 9,722.90

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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.