Home / 39,213.45-54,114.62-21,308.67

Finding the Fourth Proportional to 39,213.45, 54,114.62 and 21,308.67

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Solution

The fourth proportional to 39,213.45, 54,114.62 and 21,308.67 is: 29,405.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,213.45 : 54,114.62 = 21,308.67 : x
  2. Step 2: Convert to fraction form
    39,213.45/54,114.62 = 21,308.67/x
  3. Step 3: Cross multiply
    39,213.45x = 54,114.62 × 21,308.67
  4. Step 4: Simplify right side
    39,213.45x = 1,153,110,473.21
  5. Step 5: Solve for x
    x = 1,153,110,473.21/39,213.45
  6. Step 6: Final answer
    x = 29,405.99

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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.