Home / 11,853.12-16,356.84-7,136.40

Finding the Fourth Proportional to 11,853.12, 16,356.84 and 7,136.40

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Solution

The fourth proportional to 11,853.12, 16,356.84 and 7,136.40 is: 9,847.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,853.12 : 16,356.84 = 7,136.40 : x
  2. Step 2: Convert to fraction form
    11,853.12/16,356.84 = 7,136.40/x
  3. Step 3: Cross multiply
    11,853.12x = 16,356.84 × 7,136.40
  4. Step 4: Simplify right side
    11,853.12x = 116,728,952.98
  5. Step 5: Solve for x
    x = 116,728,952.98/11,853.12
  6. Step 6: Final answer
    x = 9,847.95

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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.