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Finding the Fourth Proportional to 28,155.11, 42,231.11 and 7,094.88

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Solution

The fourth proportional to 28,155.11, 42,231.11 and 7,094.88 is: 10,641.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155.11 : 42,231.11 = 7,094.88 : x
  2. Step 2: Convert to fraction form
    28,155.11/42,231.11 = 7,094.88/x
  3. Step 3: Cross multiply
    28,155.11x = 42,231.11 × 7,094.88
  4. Step 4: Simplify right side
    28,155.11x = 299,624,622.24
  5. Step 5: Solve for x
    x = 299,624,622.24/28,155.11
  6. Step 6: Final answer
    x = 10,641.93

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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.