Home / 13,134.21-18,125.47-7,166.10

Finding the Fourth Proportional to 13,134.21, 18,125.47 and 7,166.10

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Solution

The fourth proportional to 13,134.21, 18,125.47 and 7,166.10 is: 9,889.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.21 : 18,125.47 = 7,166.10 : x
  2. Step 2: Convert to fraction form
    13,134.21/18,125.47 = 7,166.10/x
  3. Step 3: Cross multiply
    13,134.21x = 18,125.47 × 7,166.10
  4. Step 4: Simplify right side
    13,134.21x = 129,888,930.57
  5. Step 5: Solve for x
    x = 129,888,930.57/13,134.21
  6. Step 6: Final answer
    x = 9,889.36

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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.