Home / 15,145.03-20,855.20-10,888.60

Finding the Fourth Proportional to 15,145.03, 20,855.20 and 10,888.60

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Solution

The fourth proportional to 15,145.03, 20,855.20 and 10,888.60 is: 14,993.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,145.03 : 20,855.20 = 10,888.60 : x
  2. Step 2: Convert to fraction form
    15,145.03/20,855.20 = 10,888.60/x
  3. Step 3: Cross multiply
    15,145.03x = 20,855.20 × 10,888.60
  4. Step 4: Simplify right side
    15,145.03x = 227,083,930.72
  5. Step 5: Solve for x
    x = 227,083,930.72/15,145.03
  6. Step 6: Final answer
    x = 14,993.96

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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.