Home / 11,688.98-16,131.15-7,212.92

Finding the Fourth Proportional to 11,688.98, 16,131.15 and 7,212.92

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Solution

The fourth proportional to 11,688.98, 16,131.15 and 7,212.92 is: 9,954.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.98 : 16,131.15 = 7,212.92 : x
  2. Step 2: Convert to fraction form
    11,688.98/16,131.15 = 7,212.92/x
  3. Step 3: Cross multiply
    11,688.98x = 16,131.15 × 7,212.92
  4. Step 4: Simplify right side
    11,688.98x = 116,352,613.80
  5. Step 5: Solve for x
    x = 116,352,613.80/11,688.98
  6. Step 6: Final answer
    x = 9,954.05

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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.