Home / 10,518.72-15,778.08-2,727.60

Finding the Fourth Proportional to 10,518.72, 15,778.08 and 2,727.60

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Solution

The fourth proportional to 10,518.72, 15,778.08 and 2,727.60 is: 4,091.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,518.72 : 15,778.08 = 2,727.60 : x
  2. Step 2: Convert to fraction form
    10,518.72/15,778.08 = 2,727.60/x
  3. Step 3: Cross multiply
    10,518.72x = 15,778.08 × 2,727.60
  4. Step 4: Simplify right side
    10,518.72x = 43,036,291.01
  5. Step 5: Solve for x
    x = 43,036,291.01/10,518.72
  6. Step 6: Final answer
    x = 4,091.40

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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.