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Finding the Fourth Proportional to 15,647.46, 21,595.67 and 8,933.67

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Solution

The fourth proportional to 15,647.46, 21,595.67 and 8,933.67 is: 12,329.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,647.46 : 21,595.67 = 8,933.67 : x
  2. Step 2: Convert to fraction form
    15,647.46/21,595.67 = 8,933.67/x
  3. Step 3: Cross multiply
    15,647.46x = 21,595.67 × 8,933.67
  4. Step 4: Simplify right side
    15,647.46x = 192,928,544.54
  5. Step 5: Solve for x
    x = 192,928,544.54/15,647.46
  6. Step 6: Final answer
    x = 12,329.70

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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.