Home / 11,805.12-16,291.05-6,499.95

Finding the Fourth Proportional to 11,805.12, 16,291.05 and 6,499.95

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Solution

The fourth proportional to 11,805.12, 16,291.05 and 6,499.95 is: 8,969.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,805.12 : 16,291.05 = 6,499.95 : x
  2. Step 2: Convert to fraction form
    11,805.12/16,291.05 = 6,499.95/x
  3. Step 3: Cross multiply
    11,805.12x = 16,291.05 × 6,499.95
  4. Step 4: Simplify right side
    11,805.12x = 105,891,010.45
  5. Step 5: Solve for x
    x = 105,891,010.45/11,805.12
  6. Step 6: Final answer
    x = 8,969.92

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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.