Home / 12,403.05-18,580.81-11,986.17

Finding the Fourth Proportional to 12,403.05, 18,580.81 and 11,986.17

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Solution

The fourth proportional to 12,403.05, 18,580.81 and 11,986.17 is: 17,956.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,403.05 : 18,580.81 = 11,986.17 : x
  2. Step 2: Convert to fraction form
    12,403.05/18,580.81 = 11,986.17/x
  3. Step 3: Cross multiply
    12,403.05x = 18,580.81 × 11,986.17
  4. Step 4: Simplify right side
    12,403.05x = 222,712,747.40
  5. Step 5: Solve for x
    x = 222,712,747.40/12,403.05
  6. Step 6: Final answer
    x = 17,956.29

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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.