Home / 28,080.57-42,121.32-9,360.36

Finding the Fourth Proportional to 28,080.57, 42,121.32 and 9,360.36

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Solution

The fourth proportional to 28,080.57, 42,121.32 and 9,360.36 is: 14,040.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,080.57 : 42,121.32 = 9,360.36 : x
  2. Step 2: Convert to fraction form
    28,080.57/42,121.32 = 9,360.36/x
  3. Step 3: Cross multiply
    28,080.57x = 42,121.32 × 9,360.36
  4. Step 4: Simplify right side
    28,080.57x = 394,270,683.77
  5. Step 5: Solve for x
    x = 394,270,683.77/28,080.57
  6. Step 6: Final answer
    x = 14,040.69

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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.