Home / 28,355.36-39,119.85-28,311.62

Finding the Fourth Proportional to 28,355.36, 39,119.85 and 28,311.62

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Solution

The fourth proportional to 28,355.36, 39,119.85 and 28,311.62 is: 39,059.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355.36 : 39,119.85 = 28,311.62 : x
  2. Step 2: Convert to fraction form
    28,355.36/39,119.85 = 28,311.62/x
  3. Step 3: Cross multiply
    28,355.36x = 39,119.85 × 28,311.62
  4. Step 4: Simplify right side
    28,355.36x = 1,107,546,132.06
  5. Step 5: Solve for x
    x = 1,107,546,132.06/28,355.36
  6. Step 6: Final answer
    x = 39,059.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.