Home / 21,223.68-31,834.96-10,138.20

Finding the Fourth Proportional to 21,223.68, 31,834.96 and 10,138.20

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Solution

The fourth proportional to 21,223.68, 31,834.96 and 10,138.20 is: 15,207.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223.68 : 31,834.96 = 10,138.20 : x
  2. Step 2: Convert to fraction form
    21,223.68/31,834.96 = 10,138.20/x
  3. Step 3: Cross multiply
    21,223.68x = 31,834.96 × 10,138.20
  4. Step 4: Simplify right side
    21,223.68x = 322,749,191.47
  5. Step 5: Solve for x
    x = 322,749,191.47/21,223.68
  6. Step 6: Final answer
    x = 15,207.03

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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.