Home / 11,021.21-15,209.06-6,240.80

Finding the Fourth Proportional to 11,021.21, 15,209.06 and 6,240.80

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Solution

The fourth proportional to 11,021.21, 15,209.06 and 6,240.80 is: 8,612.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,021.21 : 15,209.06 = 6,240.80 : x
  2. Step 2: Convert to fraction form
    11,021.21/15,209.06 = 6,240.80/x
  3. Step 3: Cross multiply
    11,021.21x = 15,209.06 × 6,240.80
  4. Step 4: Simplify right side
    11,021.21x = 94,916,701.65
  5. Step 5: Solve for x
    x = 94,916,701.65/11,021.21
  6. Step 6: Final answer
    x = 8,612.19

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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.