Home / 12,940.11-17,856.96-7,274.75

Finding the Fourth Proportional to 12,940.11, 17,856.96 and 7,274.75

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Solution

The fourth proportional to 12,940.11, 17,856.96 and 7,274.75 is: 10,038.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,940.11 : 17,856.96 = 7,274.75 : x
  2. Step 2: Convert to fraction form
    12,940.11/17,856.96 = 7,274.75/x
  3. Step 3: Cross multiply
    12,940.11x = 17,856.96 × 7,274.75
  4. Step 4: Simplify right side
    12,940.11x = 129,904,830.48
  5. Step 5: Solve for x
    x = 129,904,830.48/12,940.11
  6. Step 6: Final answer
    x = 10,038.93

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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.