Home / 20,177.90-30,266.85-9,809.90

Finding the Fourth Proportional to 20,177.90, 30,266.85 and 9,809.90

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Solution

The fourth proportional to 20,177.90, 30,266.85 and 9,809.90 is: 14,714.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,177.90 : 30,266.85 = 9,809.90 : x
  2. Step 2: Convert to fraction form
    20,177.90/30,266.85 = 9,809.90/x
  3. Step 3: Cross multiply
    20,177.90x = 30,266.85 × 9,809.90
  4. Step 4: Simplify right side
    20,177.90x = 296,914,771.82
  5. Step 5: Solve for x
    x = 296,914,771.82/20,177.90
  6. Step 6: Final answer
    x = 14,714.85

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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.