Home / 28,132.30-42,198.45-7,355.80

Finding the Fourth Proportional to 28,132.30, 42,198.45 and 7,355.80

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Solution

The fourth proportional to 28,132.30, 42,198.45 and 7,355.80 is: 11,033.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132.30 : 42,198.45 = 7,355.80 : x
  2. Step 2: Convert to fraction form
    28,132.30/42,198.45 = 7,355.80/x
  3. Step 3: Cross multiply
    28,132.30x = 42,198.45 × 7,355.80
  4. Step 4: Simplify right side
    28,132.30x = 310,403,358.51
  5. Step 5: Solve for x
    x = 310,403,358.51/28,132.30
  6. Step 6: Final answer
    x = 11,033.70

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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.