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Finding the Fourth Proportional to 15,152.77, 20,907.30 and 9,183.13

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Solution

The fourth proportional to 15,152.77, 20,907.30 and 9,183.13 is: 12,670.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,152.77 : 20,907.30 = 9,183.13 : x
  2. Step 2: Convert to fraction form
    15,152.77/20,907.30 = 9,183.13/x
  3. Step 3: Cross multiply
    15,152.77x = 20,907.30 × 9,183.13
  4. Step 4: Simplify right side
    15,152.77x = 191,994,453.85
  5. Step 5: Solve for x
    x = 191,994,453.85/15,152.77
  6. Step 6: Final answer
    x = 12,670.58

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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.