Home / 22,117.86-30,553.61-15,400.13

Finding the Fourth Proportional to 22,117.86, 30,553.61 and 15,400.13

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Solution

The fourth proportional to 22,117.86, 30,553.61 and 15,400.13 is: 21,273.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,117.86 : 30,553.61 = 15,400.13 : x
  2. Step 2: Convert to fraction form
    22,117.86/30,553.61 = 15,400.13/x
  3. Step 3: Cross multiply
    22,117.86x = 30,553.61 × 15,400.13
  4. Step 4: Simplify right side
    22,117.86x = 470,529,336.20
  5. Step 5: Solve for x
    x = 470,529,336.20/22,117.86
  6. Step 6: Final answer
    x = 21,273.73

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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.