Home / 11,754.12-16,220.28-6,448.80

Finding the Fourth Proportional to 11,754.12, 16,220.28 and 6,448.80

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Solution

The fourth proportional to 11,754.12, 16,220.28 and 6,448.80 is: 8,899.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,754.12 : 16,220.28 = 6,448.80 : x
  2. Step 2: Convert to fraction form
    11,754.12/16,220.28 = 6,448.80/x
  3. Step 3: Cross multiply
    11,754.12x = 16,220.28 × 6,448.80
  4. Step 4: Simplify right side
    11,754.12x = 104,601,341.66
  5. Step 5: Solve for x
    x = 104,601,341.66/11,754.12
  6. Step 6: Final answer
    x = 8,899.12

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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.