Home / 15,523.11-21,421.25-8,808.60

Finding the Fourth Proportional to 15,523.11, 21,421.25 and 8,808.60

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Solution

The fourth proportional to 15,523.11, 21,421.25 and 8,808.60 is: 12,155.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,523.11 : 21,421.25 = 8,808.60 : x
  2. Step 2: Convert to fraction form
    15,523.11/21,421.25 = 8,808.60/x
  3. Step 3: Cross multiply
    15,523.11x = 21,421.25 × 8,808.60
  4. Step 4: Simplify right side
    15,523.11x = 188,691,222.75
  5. Step 5: Solve for x
    x = 188,691,222.75/15,523.11
  6. Step 6: Final answer
    x = 12,155.50

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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.