Home / 11,715.90-16,191.27-8,741.58

Finding the Fourth Proportional to 11,715.90, 16,191.27 and 8,741.58

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Solution

The fourth proportional to 11,715.90, 16,191.27 and 8,741.58 is: 12,080.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,715.90 : 16,191.27 = 8,741.58 : x
  2. Step 2: Convert to fraction form
    11,715.90/16,191.27 = 8,741.58/x
  3. Step 3: Cross multiply
    11,715.90x = 16,191.27 × 8,741.58
  4. Step 4: Simplify right side
    11,715.90x = 141,537,282.01
  5. Step 5: Solve for x
    x = 141,537,282.01/11,715.90
  6. Step 6: Final answer
    x = 12,080.79

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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.