Home / 15,295.43-21,117.15-10,198.12

Finding the Fourth Proportional to 15,295.43, 21,117.15 and 10,198.12

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Solution

The fourth proportional to 15,295.43, 21,117.15 and 10,198.12 is: 14,079.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,295.43 : 21,117.15 = 10,198.12 : x
  2. Step 2: Convert to fraction form
    15,295.43/21,117.15 = 10,198.12/x
  3. Step 3: Cross multiply
    15,295.43x = 21,117.15 × 10,198.12
  4. Step 4: Simplify right side
    15,295.43x = 215,355,187.88
  5. Step 5: Solve for x
    x = 215,355,187.88/15,295.43
  6. Step 6: Final answer
    x = 14,079.71

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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.