Home / 11,685.12-16,124.10-6,648.36

Finding the Fourth Proportional to 11,685.12, 16,124.10 and 6,648.36

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Solution

The fourth proportional to 11,685.12, 16,124.10 and 6,648.36 is: 9,173.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685.12 : 16,124.10 = 6,648.36 : x
  2. Step 2: Convert to fraction form
    11,685.12/16,124.10 = 6,648.36/x
  3. Step 3: Cross multiply
    11,685.12x = 16,124.10 × 6,648.36
  4. Step 4: Simplify right side
    11,685.12x = 107,198,821.48
  5. Step 5: Solve for x
    x = 107,198,821.48/11,685.12
  6. Step 6: Final answer
    x = 9,173.96

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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.