Home / 13,160.48-18,161.44-7,110.71

Finding the Fourth Proportional to 13,160.48, 18,161.44 and 7,110.71

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Solution

The fourth proportional to 13,160.48, 18,161.44 and 7,110.71 is: 9,812.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.48 : 18,161.44 = 7,110.71 : x
  2. Step 2: Convert to fraction form
    13,160.48/18,161.44 = 7,110.71/x
  3. Step 3: Cross multiply
    13,160.48x = 18,161.44 × 7,110.71
  4. Step 4: Simplify right side
    13,160.48x = 129,140,763.62
  5. Step 5: Solve for x
    x = 129,140,763.62/13,160.48
  6. Step 6: Final answer
    x = 9,812.77

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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.