Home / 21,918.68-30,247.91-11,847.09

Finding the Fourth Proportional to 21,918.68, 30,247.91 and 11,847.09

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Solution

The fourth proportional to 21,918.68, 30,247.91 and 11,847.09 is: 16,349.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,918.68 : 30,247.91 = 11,847.09 : x
  2. Step 2: Convert to fraction form
    21,918.68/30,247.91 = 11,847.09/x
  3. Step 3: Cross multiply
    21,918.68x = 30,247.91 × 11,847.09
  4. Step 4: Simplify right side
    21,918.68x = 358,349,652.85
  5. Step 5: Solve for x
    x = 358,349,652.85/21,918.68
  6. Step 6: Final answer
    x = 16,349.06

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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.