Home / 15,724.44-21,699.60-8,650.72

Finding the Fourth Proportional to 15,724.44, 21,699.60 and 8,650.72

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Solution

The fourth proportional to 15,724.44, 21,699.60 and 8,650.72 is: 11,937.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,724.44 : 21,699.60 = 8,650.72 : x
  2. Step 2: Convert to fraction form
    15,724.44/21,699.60 = 8,650.72/x
  3. Step 3: Cross multiply
    15,724.44x = 21,699.60 × 8,650.72
  4. Step 4: Simplify right side
    15,724.44x = 187,717,163.71
  5. Step 5: Solve for x
    x = 187,717,163.71/15,724.44
  6. Step 6: Final answer
    x = 11,937.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.