Home / 20,077.38-30,118.50-18,971.73

Finding the Fourth Proportional to 20,077.38, 30,118.50 and 18,971.73

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Solution

The fourth proportional to 20,077.38, 30,118.50 and 18,971.73 is: 28,459.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,077.38 : 30,118.50 = 18,971.73 : x
  2. Step 2: Convert to fraction form
    20,077.38/30,118.50 = 18,971.73/x
  3. Step 3: Cross multiply
    20,077.38x = 30,118.50 × 18,971.73
  4. Step 4: Simplify right side
    20,077.38x = 571,400,050.01
  5. Step 5: Solve for x
    x = 571,400,050.01/20,077.38
  6. Step 6: Final answer
    x = 28,459.89

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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.