Home / 15,222.87-21,005.55-8,508.24

Finding the Fourth Proportional to 15,222.87, 21,005.55 and 8,508.24

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Solution

The fourth proportional to 15,222.87, 21,005.55 and 8,508.24 is: 11,740.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,222.87 : 21,005.55 = 8,508.24 : x
  2. Step 2: Convert to fraction form
    15,222.87/21,005.55 = 8,508.24/x
  3. Step 3: Cross multiply
    15,222.87x = 21,005.55 × 8,508.24
  4. Step 4: Simplify right side
    15,222.87x = 178,720,260.73
  5. Step 5: Solve for x
    x = 178,720,260.73/15,222.87
  6. Step 6: Final answer
    x = 11,740.25

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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.