Home / 10,157.36-15,228.48-6,861.20

Finding the Fourth Proportional to 10,157.36, 15,228.48 and 6,861.20

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Solution

The fourth proportional to 10,157.36, 15,228.48 and 6,861.20 is: 10,286.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,157.36 : 15,228.48 = 6,861.20 : x
  2. Step 2: Convert to fraction form
    10,157.36/15,228.48 = 6,861.20/x
  3. Step 3: Cross multiply
    10,157.36x = 15,228.48 × 6,861.20
  4. Step 4: Simplify right side
    10,157.36x = 104,485,646.98
  5. Step 5: Solve for x
    x = 104,485,646.98/10,157.36
  6. Step 6: Final answer
    x = 10,286.69

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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.