Home / 10,174.40-15,261.60-8,619.20

Finding the Fourth Proportional to 10,174.40, 15,261.60 and 8,619.20

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Solution

The fourth proportional to 10,174.40, 15,261.60 and 8,619.20 is: 12,928.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,174.40 : 15,261.60 = 8,619.20 : x
  2. Step 2: Convert to fraction form
    10,174.40/15,261.60 = 8,619.20/x
  3. Step 3: Cross multiply
    10,174.40x = 15,261.60 × 8,619.20
  4. Step 4: Simplify right side
    10,174.40x = 131,542,782.72
  5. Step 5: Solve for x
    x = 131,542,782.72/10,174.40
  6. Step 6: Final answer
    x = 12,928.80

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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.