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Finding the Fourth Proportional to 15,074.34, 20,802.48 and 8,359.96

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Solution

The fourth proportional to 15,074.34, 20,802.48 and 8,359.96 is: 11,536.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,074.34 : 20,802.48 = 8,359.96 : x
  2. Step 2: Convert to fraction form
    15,074.34/20,802.48 = 8,359.96/x
  3. Step 3: Cross multiply
    15,074.34x = 20,802.48 × 8,359.96
  4. Step 4: Simplify right side
    15,074.34x = 173,907,900.70
  5. Step 5: Solve for x
    x = 173,907,900.70/15,074.34
  6. Step 6: Final answer
    x = 11,536.68

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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.