Home / 21,193.62-31,800.76-8,717.39

Finding the Fourth Proportional to 21,193.62, 31,800.76 and 8,717.39

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Solution

The fourth proportional to 21,193.62, 31,800.76 and 8,717.39 is: 13,080.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,193.62 : 31,800.76 = 8,717.39 : x
  2. Step 2: Convert to fraction form
    21,193.62/31,800.76 = 8,717.39/x
  3. Step 3: Cross multiply
    21,193.62x = 31,800.76 × 8,717.39
  4. Step 4: Simplify right side
    21,193.62x = 277,219,565.67
  5. Step 5: Solve for x
    x = 277,219,565.67/21,193.62
  6. Step 6: Final answer
    x = 13,080.33

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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.