Home / 11,389.12-15,717.00-6,609.99

Finding the Fourth Proportional to 11,389.12, 15,717.00 and 6,609.99

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Solution

The fourth proportional to 11,389.12, 15,717.00 and 6,609.99 is: 9,121.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,389.12 : 15,717.00 = 6,609.99 : x
  2. Step 2: Convert to fraction form
    11,389.12/15,717.00 = 6,609.99/x
  3. Step 3: Cross multiply
    11,389.12x = 15,717.00 × 6,609.99
  4. Step 4: Simplify right side
    11,389.12x = 103,889,259.38
  5. Step 5: Solve for x
    x = 103,889,259.38/11,389.12
  6. Step 6: Final answer
    x = 9,121.80

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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.