Home / 11,212.02-15,462.09-8,859.78

Finding the Fourth Proportional to 11,212.02, 15,462.09 and 8,859.78

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Solution

The fourth proportional to 11,212.02, 15,462.09 and 8,859.78 is: 12,218.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,212.02 : 15,462.09 = 8,859.78 : x
  2. Step 2: Convert to fraction form
    11,212.02/15,462.09 = 8,859.78/x
  3. Step 3: Cross multiply
    11,212.02x = 15,462.09 × 8,859.78
  4. Step 4: Simplify right side
    11,212.02x = 136,990,715.74
  5. Step 5: Solve for x
    x = 136,990,715.74/11,212.02
  6. Step 6: Final answer
    x = 12,218.20

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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.