Home / 21,214.35-31,833.86-8,735.63

Finding the Fourth Proportional to 21,214.35, 31,833.86 and 8,735.63

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Solution

The fourth proportional to 21,214.35, 31,833.86 and 8,735.63 is: 13,108.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,214.35 : 31,833.86 = 8,735.63 : x
  2. Step 2: Convert to fraction form
    21,214.35/31,833.86 = 8,735.63/x
  3. Step 3: Cross multiply
    21,214.35x = 31,833.86 × 8,735.63
  4. Step 4: Simplify right side
    21,214.35x = 278,088,619.58
  5. Step 5: Solve for x
    x = 278,088,619.58/21,214.35
  6. Step 6: Final answer
    x = 13,108.51

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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.