Home / 12,487.20-18,724.32-6,240.48

Finding the Fourth Proportional to 12,487.20, 18,724.32 and 6,240.48

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Solution

The fourth proportional to 12,487.20, 18,724.32 and 6,240.48 is: 9,357.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487.20 : 18,724.32 = 6,240.48 : x
  2. Step 2: Convert to fraction form
    12,487.20/18,724.32 = 6,240.48/x
  3. Step 3: Cross multiply
    12,487.20x = 18,724.32 × 6,240.48
  4. Step 4: Simplify right side
    12,487.20x = 116,848,744.47
  5. Step 5: Solve for x
    x = 116,848,744.47/12,487.20
  6. Step 6: Final answer
    x = 9,357.48

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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.