Home / 10,015.72-15,015.08-6,122.88

Finding the Fourth Proportional to 10,015.72, 15,015.08 and 6,122.88

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Solution

The fourth proportional to 10,015.72, 15,015.08 and 6,122.88 is: 9,179.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,015.72 : 15,015.08 = 6,122.88 : x
  2. Step 2: Convert to fraction form
    10,015.72/15,015.08 = 6,122.88/x
  3. Step 3: Cross multiply
    10,015.72x = 15,015.08 × 6,122.88
  4. Step 4: Simplify right side
    10,015.72x = 91,935,533.03
  5. Step 5: Solve for x
    x = 91,935,533.03/10,015.72
  6. Step 6: Final answer
    x = 9,179.12

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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.