Home / 15,783.43-21,761.44-10,108.86

Finding the Fourth Proportional to 15,783.43, 21,761.44 and 10,108.86

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Solution

The fourth proportional to 15,783.43, 21,761.44 and 10,108.86 is: 13,937.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,783.43 : 21,761.44 = 10,108.86 : x
  2. Step 2: Convert to fraction form
    15,783.43/21,761.44 = 10,108.86/x
  3. Step 3: Cross multiply
    15,783.43x = 21,761.44 × 10,108.86
  4. Step 4: Simplify right side
    15,783.43x = 219,983,350.36
  5. Step 5: Solve for x
    x = 219,983,350.36/15,783.43
  6. Step 6: Final answer
    x = 13,937.61

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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.