Home / 28,127.72-42,188.64-7,351.16

Finding the Fourth Proportional to 28,127.72, 42,188.64 and 7,351.16

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Solution

The fourth proportional to 28,127.72, 42,188.64 and 7,351.16 is: 11,025.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,127.72 : 42,188.64 = 7,351.16 : x
  2. Step 2: Convert to fraction form
    28,127.72/42,188.64 = 7,351.16/x
  3. Step 3: Cross multiply
    28,127.72x = 42,188.64 × 7,351.16
  4. Step 4: Simplify right side
    28,127.72x = 310,135,442.82
  5. Step 5: Solve for x
    x = 310,135,442.82/28,127.72
  6. Step 6: Final answer
    x = 11,025.97

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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.