Home / 12,666.19-18,999.03-3,781.50

Finding the Fourth Proportional to 12,666.19, 18,999.03 and 3,781.50

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Solution

The fourth proportional to 12,666.19, 18,999.03 and 3,781.50 is: 5,672.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,666.19 : 18,999.03 = 3,781.50 : x
  2. Step 2: Convert to fraction form
    12,666.19/18,999.03 = 3,781.50/x
  3. Step 3: Cross multiply
    12,666.19x = 18,999.03 × 3,781.50
  4. Step 4: Simplify right side
    12,666.19x = 71,844,790.96
  5. Step 5: Solve for x
    x = 71,844,790.96/12,666.19
  6. Step 6: Final answer
    x = 5,672.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.