Home / 20,490.35-28,217.17-17,800.34

Finding the Fourth Proportional to 20,490.35, 28,217.17 and 17,800.34

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Solution

The fourth proportional to 20,490.35, 28,217.17 and 17,800.34 is: 24,512.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490.35 : 28,217.17 = 17,800.34 : x
  2. Step 2: Convert to fraction form
    20,490.35/28,217.17 = 17,800.34/x
  3. Step 3: Cross multiply
    20,490.35x = 28,217.17 × 17,800.34
  4. Step 4: Simplify right side
    20,490.35x = 502,275,219.84
  5. Step 5: Solve for x
    x = 502,275,219.84/20,490.35
  6. Step 6: Final answer
    x = 24,512.77

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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.