Home / 21,819.76-30,088.20-20,044.24

Finding the Fourth Proportional to 21,819.76, 30,088.20 and 20,044.24

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Solution

The fourth proportional to 21,819.76, 30,088.20 and 20,044.24 is: 27,639.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,819.76 : 30,088.20 = 20,044.24 : x
  2. Step 2: Convert to fraction form
    21,819.76/30,088.20 = 20,044.24/x
  3. Step 3: Cross multiply
    21,819.76x = 30,088.20 × 20,044.24
  4. Step 4: Simplify right side
    21,819.76x = 603,095,101.97
  5. Step 5: Solve for x
    x = 603,095,101.97/21,819.76
  6. Step 6: Final answer
    x = 27,639.86

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1.5x scale

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.