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Finding the Fourth Proportional to 15,124.37, 20,873.81 and 9,074.89

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Solution

The fourth proportional to 15,124.37, 20,873.81 and 9,074.89 is: 12,524.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,124.37 : 20,873.81 = 9,074.89 : x
  2. Step 2: Convert to fraction form
    15,124.37/20,873.81 = 9,074.89/x
  3. Step 3: Cross multiply
    15,124.37x = 20,873.81 × 9,074.89
  4. Step 4: Simplify right side
    15,124.37x = 189,427,473.76
  5. Step 5: Solve for x
    x = 189,427,473.76/15,124.37
  6. Step 6: Final answer
    x = 12,524.65

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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.