Home / 15,579.54-21,500.64-8,506.62

Finding the Fourth Proportional to 15,579.54, 21,500.64 and 8,506.62

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Solution

The fourth proportional to 15,579.54, 21,500.64 and 8,506.62 is: 11,739.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,579.54 : 21,500.64 = 8,506.62 : x
  2. Step 2: Convert to fraction form
    15,579.54/21,500.64 = 8,506.62/x
  3. Step 3: Cross multiply
    15,579.54x = 21,500.64 × 8,506.62
  4. Step 4: Simplify right side
    15,579.54x = 182,897,774.24
  5. Step 5: Solve for x
    x = 182,897,774.24/15,579.54
  6. Step 6: Final answer
    x = 11,739.61

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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.