Home / 12,813.08-19,231.60-7,892.32

Finding the Fourth Proportional to 12,813.08, 19,231.60 and 7,892.32

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Solution

The fourth proportional to 12,813.08, 19,231.60 and 7,892.32 is: 11,845.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,813.08 : 19,231.60 = 7,892.32 : x
  2. Step 2: Convert to fraction form
    12,813.08/19,231.60 = 7,892.32/x
  3. Step 3: Cross multiply
    12,813.08x = 19,231.60 × 7,892.32
  4. Step 4: Simplify right side
    12,813.08x = 151,781,941.31
  5. Step 5: Solve for x
    x = 151,781,941.31/12,813.08
  6. Step 6: Final answer
    x = 11,845.86

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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.