Home / 30,256.54-45,389.67-12,731.38

Finding the Fourth Proportional to 30,256.54, 45,389.67 and 12,731.38

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Solution

The fourth proportional to 30,256.54, 45,389.67 and 12,731.38 is: 19,099.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,256.54 : 45,389.67 = 12,731.38 : x
  2. Step 2: Convert to fraction form
    30,256.54/45,389.67 = 12,731.38/x
  3. Step 3: Cross multiply
    30,256.54x = 45,389.67 × 12,731.38
  4. Step 4: Simplify right side
    30,256.54x = 577,873,136.84
  5. Step 5: Solve for x
    x = 577,873,136.84/30,256.54
  6. Step 6: Final answer
    x = 19,099.11

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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.