Home / 10,685.22-16,011.60-6,777.78

Finding the Fourth Proportional to 10,685.22, 16,011.60 and 6,777.78

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Solution

The fourth proportional to 10,685.22, 16,011.60 and 6,777.78 is: 10,156.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,685.22 : 16,011.60 = 6,777.78 : x
  2. Step 2: Convert to fraction form
    10,685.22/16,011.60 = 6,777.78/x
  3. Step 3: Cross multiply
    10,685.22x = 16,011.60 × 6,777.78
  4. Step 4: Simplify right side
    10,685.22x = 108,523,102.25
  5. Step 5: Solve for x
    x = 108,523,102.25/10,685.22
  6. Step 6: Final answer
    x = 10,156.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.