Home / 11,816.88-16,307.22-6,439.30

Finding the Fourth Proportional to 11,816.88, 16,307.22 and 6,439.30

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Solution

The fourth proportional to 11,816.88, 16,307.22 and 6,439.30 is: 8,886.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,816.88 : 16,307.22 = 6,439.30 : x
  2. Step 2: Convert to fraction form
    11,816.88/16,307.22 = 6,439.30/x
  3. Step 3: Cross multiply
    11,816.88x = 16,307.22 × 6,439.30
  4. Step 4: Simplify right side
    11,816.88x = 105,007,077.98
  5. Step 5: Solve for x
    x = 105,007,077.98/11,816.88
  6. Step 6: Final answer
    x = 8,886.20

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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.