Home / 15,111.20-22,661.40-5,250.80

Finding the Fourth Proportional to 15,111.20, 22,661.40 and 5,250.80

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Solution

The fourth proportional to 15,111.20, 22,661.40 and 5,250.80 is: 7,874.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,111.20 : 22,661.40 = 5,250.80 : x
  2. Step 2: Convert to fraction form
    15,111.20/22,661.40 = 5,250.80/x
  3. Step 3: Cross multiply
    15,111.20x = 22,661.40 × 5,250.80
  4. Step 4: Simplify right side
    15,111.20x = 118,990,479.12
  5. Step 5: Solve for x
    x = 118,990,479.12/15,111.20
  6. Step 6: Final answer
    x = 7,874.32

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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.