Home / 20,348.85-30,487.40-17,821.85

Finding the Fourth Proportional to 20,348.85, 30,487.40 and 17,821.85

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Solution

The fourth proportional to 20,348.85, 30,487.40 and 17,821.85 is: 26,701.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,348.85 : 30,487.40 = 17,821.85 : x
  2. Step 2: Convert to fraction form
    20,348.85/30,487.40 = 17,821.85/x
  3. Step 3: Cross multiply
    20,348.85x = 30,487.40 × 17,821.85
  4. Step 4: Simplify right side
    20,348.85x = 543,341,628.14
  5. Step 5: Solve for x
    x = 543,341,628.14/20,348.85
  6. Step 6: Final answer
    x = 26,701.34

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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.