Home / 13,117.71-18,102.41-7,149.37

Finding the Fourth Proportional to 13,117.71, 18,102.41 and 7,149.37

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Solution

The fourth proportional to 13,117.71, 18,102.41 and 7,149.37 is: 9,866.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.71 : 18,102.41 = 7,149.37 : x
  2. Step 2: Convert to fraction form
    13,117.71/18,102.41 = 7,149.37/x
  3. Step 3: Cross multiply
    13,117.71x = 18,102.41 × 7,149.37
  4. Step 4: Simplify right side
    13,117.71x = 129,420,826.98
  5. Step 5: Solve for x
    x = 129,420,826.98/13,117.71
  6. Step 6: Final answer
    x = 9,866.11

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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.