Home / 13,243.29-19,936.47-12,099.21

Finding the Fourth Proportional to 13,243.29, 19,936.47 and 12,099.21

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Solution

The fourth proportional to 13,243.29, 19,936.47 and 12,099.21 is: 18,214.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,243.29 : 19,936.47 = 12,099.21 : x
  2. Step 2: Convert to fraction form
    13,243.29/19,936.47 = 12,099.21/x
  3. Step 3: Cross multiply
    13,243.29x = 19,936.47 × 12,099.21
  4. Step 4: Simplify right side
    13,243.29x = 241,215,537.19
  5. Step 5: Solve for x
    x = 241,215,537.19/13,243.29
  6. Step 6: Final answer
    x = 18,214.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.