Home / 12,624.21-17,421.48-7,245.20

Finding the Fourth Proportional to 12,624.21, 17,421.48 and 7,245.20

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Solution

The fourth proportional to 12,624.21, 17,421.48 and 7,245.20 is: 9,998.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,624.21 : 17,421.48 = 7,245.20 : x
  2. Step 2: Convert to fraction form
    12,624.21/17,421.48 = 7,245.20/x
  3. Step 3: Cross multiply
    12,624.21x = 17,421.48 × 7,245.20
  4. Step 4: Simplify right side
    12,624.21x = 126,222,106.90
  5. Step 5: Solve for x
    x = 126,222,106.90/12,624.21
  6. Step 6: Final answer
    x = 9,998.42

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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.