Home / 13,180.23-18,197.37-7,876.71

Finding the Fourth Proportional to 13,180.23, 18,197.37 and 7,876.71

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Solution

The fourth proportional to 13,180.23, 18,197.37 and 7,876.71 is: 10,875.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,180.23 : 18,197.37 = 7,876.71 : x
  2. Step 2: Convert to fraction form
    13,180.23/18,197.37 = 7,876.71/x
  3. Step 3: Cross multiply
    13,180.23x = 18,197.37 × 7,876.71
  4. Step 4: Simplify right side
    13,180.23x = 143,335,406.25
  5. Step 5: Solve for x
    x = 143,335,406.25/13,180.23
  6. Step 6: Final answer
    x = 10,875.03

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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.