Home / 21,193.68-31,800.84-8,717.44

Finding the Fourth Proportional to 21,193.68, 31,800.84 and 8,717.44

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Solution

The fourth proportional to 21,193.68, 31,800.84 and 8,717.44 is: 13,080.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,193.68 : 31,800.84 = 8,717.44 : x
  2. Step 2: Convert to fraction form
    21,193.68/31,800.84 = 8,717.44/x
  3. Step 3: Cross multiply
    21,193.68x = 31,800.84 × 8,717.44
  4. Step 4: Simplify right side
    21,193.68x = 277,221,914.65
  5. Step 5: Solve for x
    x = 277,221,914.65/21,193.68
  6. Step 6: Final answer
    x = 13,080.40

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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.