Home / 12,528.86-18,773.30-9,181.60

Finding the Fourth Proportional to 12,528.86, 18,773.30 and 9,181.60

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Solution

The fourth proportional to 12,528.86, 18,773.30 and 9,181.60 is: 13,757.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.86 : 18,773.30 = 9,181.60 : x
  2. Step 2: Convert to fraction form
    12,528.86/18,773.30 = 9,181.60/x
  3. Step 3: Cross multiply
    12,528.86x = 18,773.30 × 9,181.60
  4. Step 4: Simplify right side
    12,528.86x = 172,368,855.08
  5. Step 5: Solve for x
    x = 172,368,855.08/12,528.86
  6. Step 6: Final answer
    x = 13,757.74

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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.