Home / 12,682.36-17,501.70-7,375.78

Finding the Fourth Proportional to 12,682.36, 17,501.70 and 7,375.78

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Solution

The fourth proportional to 12,682.36, 17,501.70 and 7,375.78 is: 10,178.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,682.36 : 17,501.70 = 7,375.78 : x
  2. Step 2: Convert to fraction form
    12,682.36/17,501.70 = 7,375.78/x
  3. Step 3: Cross multiply
    12,682.36x = 17,501.70 × 7,375.78
  4. Step 4: Simplify right side
    12,682.36x = 129,088,688.83
  5. Step 5: Solve for x
    x = 129,088,688.83/12,682.36
  6. Step 6: Final answer
    x = 10,178.60

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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.