Home / 11,886.88-16,403.20-6,581.40

Finding the Fourth Proportional to 11,886.88, 16,403.20 and 6,581.40

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Solution

The fourth proportional to 11,886.88, 16,403.20 and 6,581.40 is: 9,081.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,886.88 : 16,403.20 = 6,581.40 : x
  2. Step 2: Convert to fraction form
    11,886.88/16,403.20 = 6,581.40/x
  3. Step 3: Cross multiply
    11,886.88x = 16,403.20 × 6,581.40
  4. Step 4: Simplify right side
    11,886.88x = 107,956,020.48
  5. Step 5: Solve for x
    x = 107,956,020.48/11,886.88
  6. Step 6: Final answer
    x = 9,081.95

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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.