Home / 39,818.90-59,679.14-20,103.09

Finding the Fourth Proportional to 39,818.90, 59,679.14 and 20,103.09

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Solution

The fourth proportional to 39,818.90, 59,679.14 and 20,103.09 is: 30,129.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,818.90 : 59,679.14 = 20,103.09 : x
  2. Step 2: Convert to fraction form
    39,818.90/59,679.14 = 20,103.09/x
  3. Step 3: Cross multiply
    39,818.90x = 59,679.14 × 20,103.09
  4. Step 4: Simplify right side
    39,818.90x = 1,199,735,022.03
  5. Step 5: Solve for x
    x = 1,199,735,022.03/39,818.90
  6. Step 6: Final answer
    x = 30,129.79

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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.