Home / 11,687.95-16,130.90-6,651.19

Finding the Fourth Proportional to 11,687.95, 16,130.90 and 6,651.19

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Solution

The fourth proportional to 11,687.95, 16,130.90 and 6,651.19 is: 9,179.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,687.95 : 16,130.90 = 6,651.19 : x
  2. Step 2: Convert to fraction form
    11,687.95/16,130.90 = 6,651.19/x
  3. Step 3: Cross multiply
    11,687.95x = 16,130.90 × 6,651.19
  4. Step 4: Simplify right side
    11,687.95x = 107,289,647.52
  5. Step 5: Solve for x
    x = 107,289,647.52/11,687.95
  6. Step 6: Final answer
    x = 9,179.51

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Double scale
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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.