Home / 10,091.20-15,136.80-2,795.20

Finding the Fourth Proportional to 10,091.20, 15,136.80 and 2,795.20

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Solution

The fourth proportional to 10,091.20, 15,136.80 and 2,795.20 is: 4,192.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,091.20 : 15,136.80 = 2,795.20 : x
  2. Step 2: Convert to fraction form
    10,091.20/15,136.80 = 2,795.20/x
  3. Step 3: Cross multiply
    10,091.20x = 15,136.80 × 2,795.20
  4. Step 4: Simplify right side
    10,091.20x = 42,310,383.36
  5. Step 5: Solve for x
    x = 42,310,383.36/10,091.20
  6. Step 6: Final answer
    x = 4,192.80

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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.