Home / 31,426.72-47,102.16-13,876.64

Finding the Fourth Proportional to 31,426.72, 47,102.16 and 13,876.64

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Solution

The fourth proportional to 31,426.72, 47,102.16 and 13,876.64 is: 20,798.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,426.72 : 47,102.16 = 13,876.64 : x
  2. Step 2: Convert to fraction form
    31,426.72/47,102.16 = 13,876.64/x
  3. Step 3: Cross multiply
    31,426.72x = 47,102.16 × 13,876.64
  4. Step 4: Simplify right side
    31,426.72x = 653,619,717.54
  5. Step 5: Solve for x
    x = 653,619,717.54/31,426.72
  6. Step 6: Final answer
    x = 20,798.22

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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.