Home / 11,189.34-15,438.63-9,403.59

Finding the Fourth Proportional to 11,189.34, 15,438.63 and 9,403.59

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Solution

The fourth proportional to 11,189.34, 15,438.63 and 9,403.59 is: 12,974.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,189.34 : 15,438.63 = 9,403.59 : x
  2. Step 2: Convert to fraction form
    11,189.34/15,438.63 = 9,403.59/x
  3. Step 3: Cross multiply
    11,189.34x = 15,438.63 × 9,403.59
  4. Step 4: Simplify right side
    11,189.34x = 145,178,546.68
  5. Step 5: Solve for x
    x = 145,178,546.68/11,189.34
  6. Step 6: Final answer
    x = 12,974.72

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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.