Home / 13,237.34-18,265.01-8,991.78

Finding the Fourth Proportional to 13,237.34, 18,265.01 and 8,991.78

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Solution

The fourth proportional to 13,237.34, 18,265.01 and 8,991.78 is: 12,406.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,237.34 : 18,265.01 = 8,991.78 : x
  2. Step 2: Convert to fraction form
    13,237.34/18,265.01 = 8,991.78/x
  3. Step 3: Cross multiply
    13,237.34x = 18,265.01 × 8,991.78
  4. Step 4: Simplify right side
    13,237.34x = 164,234,906.66
  5. Step 5: Solve for x
    x = 164,234,906.66/13,237.34
  6. Step 6: Final answer
    x = 12,406.95

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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.