Home / 12,489.03-18,728.91-5,089.50

Finding the Fourth Proportional to 12,489.03, 18,728.91 and 5,089.50

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Solution

The fourth proportional to 12,489.03, 18,728.91 and 5,089.50 is: 7,632.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.03 : 18,728.91 = 5,089.50 : x
  2. Step 2: Convert to fraction form
    12,489.03/18,728.91 = 5,089.50/x
  3. Step 3: Cross multiply
    12,489.03x = 18,728.91 × 5,089.50
  4. Step 4: Simplify right side
    12,489.03x = 95,320,787.45
  5. Step 5: Solve for x
    x = 95,320,787.45/12,489.03
  6. Step 6: Final answer
    x = 7,632.36

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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.