Home / 13,161.21-18,162.48-7,495.71

Finding the Fourth Proportional to 13,161.21, 18,162.48 and 7,495.71

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Solution

The fourth proportional to 13,161.21, 18,162.48 and 7,495.71 is: 10,344.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.21 : 18,162.48 = 7,495.71 : x
  2. Step 2: Convert to fraction form
    13,161.21/18,162.48 = 7,495.71/x
  3. Step 3: Cross multiply
    13,161.21x = 18,162.48 × 7,495.71
  4. Step 4: Simplify right side
    13,161.21x = 136,140,682.96
  5. Step 5: Solve for x
    x = 136,140,682.96/13,161.21
  6. Step 6: Final answer
    x = 10,344.09

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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.