Home / 11,748.48-16,215.50-9,191.18

Finding the Fourth Proportional to 11,748.48, 16,215.50 and 9,191.18

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Solution

The fourth proportional to 11,748.48, 16,215.50 and 9,191.18 is: 12,685.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,748.48 : 16,215.50 = 9,191.18 : x
  2. Step 2: Convert to fraction form
    11,748.48/16,215.50 = 9,191.18/x
  3. Step 3: Cross multiply
    11,748.48x = 16,215.50 × 9,191.18
  4. Step 4: Simplify right side
    11,748.48x = 149,039,579.29
  5. Step 5: Solve for x
    x = 149,039,579.29/11,748.48
  6. Step 6: Final answer
    x = 12,685.86

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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.