Home / 13,134.58-18,125.70-7,166.25

Finding the Fourth Proportional to 13,134.58, 18,125.70 and 7,166.25

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Solution

The fourth proportional to 13,134.58, 18,125.70 and 7,166.25 is: 9,889.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.58 : 18,125.70 = 7,166.25 : x
  2. Step 2: Convert to fraction form
    13,134.58/18,125.70 = 7,166.25/x
  3. Step 3: Cross multiply
    13,134.58x = 18,125.70 × 7,166.25
  4. Step 4: Simplify right side
    13,134.58x = 129,893,239.93
  5. Step 5: Solve for x
    x = 129,893,239.93/13,134.58
  6. Step 6: Final answer
    x = 9,889.41

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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.