Home / 13,134.69-18,125.99-7,166.39

Finding the Fourth Proportional to 13,134.69, 18,125.99 and 7,166.39

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Solution

The fourth proportional to 13,134.69, 18,125.99 and 7,166.39 is: 9,889.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.69 : 18,125.99 = 7,166.39 : x
  2. Step 2: Convert to fraction form
    13,134.69/18,125.99 = 7,166.39/x
  3. Step 3: Cross multiply
    13,134.69x = 18,125.99 × 7,166.39
  4. Step 4: Simplify right side
    13,134.69x = 129,897,787.01
  5. Step 5: Solve for x
    x = 129,897,787.01/13,134.69
  6. Step 6: Final answer
    x = 9,889.67

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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.