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Finding the Fourth Proportional to 15,189.64, 22,786.88 and 6,424.64

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Solution

The fourth proportional to 15,189.64, 22,786.88 and 6,424.64 is: 9,637.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,189.64 : 22,786.88 = 6,424.64 : x
  2. Step 2: Convert to fraction form
    15,189.64/22,786.88 = 6,424.64/x
  3. Step 3: Cross multiply
    15,189.64x = 22,786.88 × 6,424.64
  4. Step 4: Simplify right side
    15,189.64x = 146,397,500.72
  5. Step 5: Solve for x
    x = 146,397,500.72/15,189.64
  6. Step 6: Final answer
    x = 9,637.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.