Home / 21,213.39-31,793.95-8,725.62

Finding the Fourth Proportional to 21,213.39, 31,793.95 and 8,725.62

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Solution

The fourth proportional to 21,213.39, 31,793.95 and 8,725.62 is: 13,077.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.39 : 31,793.95 = 8,725.62 : x
  2. Step 2: Convert to fraction form
    21,213.39/31,793.95 = 8,725.62/x
  3. Step 3: Cross multiply
    21,213.39x = 31,793.95 × 8,725.62
  4. Step 4: Simplify right side
    21,213.39x = 277,421,926.00
  5. Step 5: Solve for x
    x = 277,421,926.00/21,213.39
  6. Step 6: Final answer
    x = 13,077.68

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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.