Home / 19,421.18-29,131.79-8,320.67

Finding the Fourth Proportional to 19,421.18, 29,131.79 and 8,320.67

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Solution

The fourth proportional to 19,421.18, 29,131.79 and 8,320.67 is: 12,481.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,421.18 : 29,131.79 = 8,320.67 : x
  2. Step 2: Convert to fraction form
    19,421.18/29,131.79 = 8,320.67/x
  3. Step 3: Cross multiply
    19,421.18x = 29,131.79 × 8,320.67
  4. Step 4: Simplify right side
    19,421.18x = 242,395,933.08
  5. Step 5: Solve for x
    x = 242,395,933.08/19,421.18
  6. Step 6: Final answer
    x = 12,481.01

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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.