Home / 12,359.12-17,057.32-7,881.44

Finding the Fourth Proportional to 12,359.12, 17,057.32 and 7,881.44

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Solution

The fourth proportional to 12,359.12, 17,057.32 and 7,881.44 is: 10,877.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,359.12 : 17,057.32 = 7,881.44 : x
  2. Step 2: Convert to fraction form
    12,359.12/17,057.32 = 7,881.44/x
  3. Step 3: Cross multiply
    12,359.12x = 17,057.32 × 7,881.44
  4. Step 4: Simplify right side
    12,359.12x = 134,436,244.14
  5. Step 5: Solve for x
    x = 134,436,244.14/12,359.12
  6. Step 6: Final answer
    x = 10,877.49

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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.