Home / 13,624.22-20,421.81-7,768.22

Finding the Fourth Proportional to 13,624.22, 20,421.81 and 7,768.22

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Solution

The fourth proportional to 13,624.22, 20,421.81 and 7,768.22 is: 11,644.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,624.22 : 20,421.81 = 7,768.22 : x
  2. Step 2: Convert to fraction form
    13,624.22/20,421.81 = 7,768.22/x
  3. Step 3: Cross multiply
    13,624.22x = 20,421.81 × 7,768.22
  4. Step 4: Simplify right side
    13,624.22x = 158,641,112.88
  5. Step 5: Solve for x
    x = 158,641,112.88/13,624.22
  6. Step 6: Final answer
    x = 11,644.05

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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.