Home / 12,872.68-17,763.45-7,207.37

Finding the Fourth Proportional to 12,872.68, 17,763.45 and 7,207.37

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Solution

The fourth proportional to 12,872.68, 17,763.45 and 7,207.37 is: 9,945.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,872.68 : 17,763.45 = 7,207.37 : x
  2. Step 2: Convert to fraction form
    12,872.68/17,763.45 = 7,207.37/x
  3. Step 3: Cross multiply
    12,872.68x = 17,763.45 × 7,207.37
  4. Step 4: Simplify right side
    12,872.68x = 128,027,756.63
  5. Step 5: Solve for x
    x = 128,027,756.63/12,872.68
  6. Step 6: Final answer
    x = 9,945.70

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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.