Home / 20,657.49-31,098.65-18,820.41

Finding the Fourth Proportional to 20,657.49, 31,098.65 and 18,820.41

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Solution

The fourth proportional to 20,657.49, 31,098.65 and 18,820.41 is: 28,333.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.49 : 31,098.65 = 18,820.41 : x
  2. Step 2: Convert to fraction form
    20,657.49/31,098.65 = 18,820.41/x
  3. Step 3: Cross multiply
    20,657.49x = 31,098.65 × 18,820.41
  4. Step 4: Simplify right side
    20,657.49x = 585,289,249.34
  5. Step 5: Solve for x
    x = 585,289,249.34/20,657.49
  6. Step 6: Final answer
    x = 28,333.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.