Home / 12,438.33-17,166.14-9,289.05

Finding the Fourth Proportional to 12,438.33, 17,166.14 and 9,289.05

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Solution

The fourth proportional to 12,438.33, 17,166.14 and 9,289.05 is: 12,819.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.33 : 17,166.14 = 9,289.05 : x
  2. Step 2: Convert to fraction form
    12,438.33/17,166.14 = 9,289.05/x
  3. Step 3: Cross multiply
    12,438.33x = 17,166.14 × 9,289.05
  4. Step 4: Simplify right side
    12,438.33x = 159,457,086.32
  5. Step 5: Solve for x
    x = 159,457,086.32/12,438.33
  6. Step 6: Final answer
    x = 12,819.81

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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.