Home / 39,121.60-58,682.40-11,419.60

Finding the Fourth Proportional to 39,121.60, 58,682.40 and 11,419.60

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Solution

The fourth proportional to 39,121.60, 58,682.40 and 11,419.60 is: 17,129.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,121.60 : 58,682.40 = 11,419.60 : x
  2. Step 2: Convert to fraction form
    39,121.60/58,682.40 = 11,419.60/x
  3. Step 3: Cross multiply
    39,121.60x = 58,682.40 × 11,419.60
  4. Step 4: Simplify right side
    39,121.60x = 670,129,535.04
  5. Step 5: Solve for x
    x = 670,129,535.04/39,121.60
  6. Step 6: Final answer
    x = 17,129.40

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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.