Home / 13,160.21-18,161.10-7,494.71

Finding the Fourth Proportional to 13,160.21, 18,161.10 and 7,494.71

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Solution

The fourth proportional to 13,160.21, 18,161.10 and 7,494.71 is: 10,342.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.21 : 18,161.10 = 7,494.71 : x
  2. Step 2: Convert to fraction form
    13,160.21/18,161.10 = 7,494.71/x
  3. Step 3: Cross multiply
    13,160.21x = 18,161.10 × 7,494.71
  4. Step 4: Simplify right side
    13,160.21x = 136,112,086.98
  5. Step 5: Solve for x
    x = 136,112,086.98/13,160.21
  6. Step 6: Final answer
    x = 10,342.70

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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.