Home / 10,886.40-16,297.20-7,192.80

Finding the Fourth Proportional to 10,886.40, 16,297.20 and 7,192.80

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Solution

The fourth proportional to 10,886.40, 16,297.20 and 7,192.80 is: 10,767.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,886.40 : 16,297.20 = 7,192.80 : x
  2. Step 2: Convert to fraction form
    10,886.40/16,297.20 = 7,192.80/x
  3. Step 3: Cross multiply
    10,886.40x = 16,297.20 × 7,192.80
  4. Step 4: Simplify right side
    10,886.40x = 117,222,500.16
  5. Step 5: Solve for x
    x = 117,222,500.16/10,886.40
  6. Step 6: Final answer
    x = 10,767.79

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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.