Home / 12,724.85-19,081.34-7,461.47

Finding the Fourth Proportional to 12,724.85, 19,081.34 and 7,461.47

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Solution

The fourth proportional to 12,724.85, 19,081.34 and 7,461.47 is: 11,188.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,724.85 : 19,081.34 = 7,461.47 : x
  2. Step 2: Convert to fraction form
    12,724.85/19,081.34 = 7,461.47/x
  3. Step 3: Cross multiply
    12,724.85x = 19,081.34 × 7,461.47
  4. Step 4: Simplify right side
    12,724.85x = 142,374,845.97
  5. Step 5: Solve for x
    x = 142,374,845.97/12,724.85
  6. Step 6: Final answer
    x = 11,188.72

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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.