Home / 11,943.78-16,482.35-6,638.57

Finding the Fourth Proportional to 11,943.78, 16,482.35 and 6,638.57

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Solution

The fourth proportional to 11,943.78, 16,482.35 and 6,638.57 is: 9,161.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,943.78 : 16,482.35 = 6,638.57 : x
  2. Step 2: Convert to fraction form
    11,943.78/16,482.35 = 6,638.57/x
  3. Step 3: Cross multiply
    11,943.78x = 16,482.35 × 6,638.57
  4. Step 4: Simplify right side
    11,943.78x = 109,419,118.63
  5. Step 5: Solve for x
    x = 109,419,118.63/11,943.78
  6. Step 6: Final answer
    x = 9,161.18

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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.