Home / 26,931.49-40,405.37-12,136.43

Finding the Fourth Proportional to 26,931.49, 40,405.37 and 12,136.43

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Solution

The fourth proportional to 26,931.49, 40,405.37 and 12,136.43 is: 18,208.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,931.49 : 40,405.37 = 12,136.43 : x
  2. Step 2: Convert to fraction form
    26,931.49/40,405.37 = 12,136.43/x
  3. Step 3: Cross multiply
    26,931.49x = 40,405.37 × 12,136.43
  4. Step 4: Simplify right side
    26,931.49x = 490,376,984.96
  5. Step 5: Solve for x
    x = 490,376,984.96/26,931.49
  6. Step 6: Final answer
    x = 18,208.31

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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.