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Finding the Fourth Proportional to 15,600.52, 21,521.86 and 9,309.25

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Solution

The fourth proportional to 15,600.52, 21,521.86 and 9,309.25 is: 12,842.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,600.52 : 21,521.86 = 9,309.25 : x
  2. Step 2: Convert to fraction form
    15,600.52/21,521.86 = 9,309.25/x
  3. Step 3: Cross multiply
    15,600.52x = 21,521.86 × 9,309.25
  4. Step 4: Simplify right side
    15,600.52x = 200,352,375.21
  5. Step 5: Solve for x
    x = 200,352,375.21/15,600.52
  6. Step 6: Final answer
    x = 12,842.67

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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.