Home / 11,887.55-16,408.47-6,855.12

Finding the Fourth Proportional to 11,887.55, 16,408.47 and 6,855.12

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Solution

The fourth proportional to 11,887.55, 16,408.47 and 6,855.12 is: 9,462.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,887.55 : 16,408.47 = 6,855.12 : x
  2. Step 2: Convert to fraction form
    11,887.55/16,408.47 = 6,855.12/x
  3. Step 3: Cross multiply
    11,887.55x = 16,408.47 × 6,855.12
  4. Step 4: Simplify right side
    11,887.55x = 112,482,030.87
  5. Step 5: Solve for x
    x = 112,482,030.87/11,887.55
  6. Step 6: Final answer
    x = 9,462.17

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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.