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Finding the Fourth Proportional to 12,488.44, 18,698.88 and 7,797.24

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Solution

The fourth proportional to 12,488.44, 18,698.88 and 7,797.24 is: 11,674.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,488.44 : 18,698.88 = 7,797.24 : x
  2. Step 2: Convert to fraction form
    12,488.44/18,698.88 = 7,797.24/x
  3. Step 3: Cross multiply
    12,488.44x = 18,698.88 × 7,797.24
  4. Step 4: Simplify right side
    12,488.44x = 145,799,655.09
  5. Step 5: Solve for x
    x = 145,799,655.09/12,488.44
  6. Step 6: Final answer
    x = 11,674.77

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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.