Home / 21,213.08-31,813.14-10,113.92

Finding the Fourth Proportional to 21,213.08, 31,813.14 and 10,113.92

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Solution

The fourth proportional to 21,213.08, 31,813.14 and 10,113.92 is: 15,167.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.08 : 31,813.14 = 10,113.92 : x
  2. Step 2: Convert to fraction form
    21,213.08/31,813.14 = 10,113.92/x
  3. Step 3: Cross multiply
    21,213.08x = 31,813.14 × 10,113.92
  4. Step 4: Simplify right side
    21,213.08x = 321,755,552.91
  5. Step 5: Solve for x
    x = 321,755,552.91/21,213.08
  6. Step 6: Final answer
    x = 15,167.79

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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.