Home / 31,850.16-47,796.05-12,128.91

Finding the Fourth Proportional to 31,850.16, 47,796.05 and 12,128.91

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Solution

The fourth proportional to 31,850.16, 47,796.05 and 12,128.91 is: 18,201.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,850.16 : 47,796.05 = 12,128.91 : x
  2. Step 2: Convert to fraction form
    31,850.16/47,796.05 = 12,128.91/x
  3. Step 3: Cross multiply
    31,850.16x = 47,796.05 × 12,128.91
  4. Step 4: Simplify right side
    31,850.16x = 579,713,988.81
  5. Step 5: Solve for x
    x = 579,713,988.81/31,850.16
  6. Step 6: Final answer
    x = 18,201.29

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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.