Home / 15,722.43-21,706.65-10,819.50

Finding the Fourth Proportional to 15,722.43, 21,706.65 and 10,819.50

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Solution

The fourth proportional to 15,722.43, 21,706.65 and 10,819.50 is: 14,937.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,722.43 : 21,706.65 = 10,819.50 : x
  2. Step 2: Convert to fraction form
    15,722.43/21,706.65 = 10,819.50/x
  3. Step 3: Cross multiply
    15,722.43x = 21,706.65 × 10,819.50
  4. Step 4: Simplify right side
    15,722.43x = 234,855,099.68
  5. Step 5: Solve for x
    x = 234,855,099.68/15,722.43
  6. Step 6: Final answer
    x = 14,937.58

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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.