Home / 31,390.64-47,073.44-13,848

Finding the Fourth Proportional to 31,390.64, 47,073.44 and 13,848

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Solution

The fourth proportional to 31,390.64, 47,073.44 and 13,848 is: 20,766.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,390.64 : 47,073.44 = 13,848 : x
  2. Step 2: Convert to fraction form
    31,390.64/47,073.44 = 13,848/x
  3. Step 3: Cross multiply
    31,390.64x = 47,073.44 × 13,848
  4. Step 4: Simplify right side
    31,390.64x = 651,872,997.12
  5. Step 5: Solve for x
    x = 651,872,997.12/31,390.64
  6. Step 6: Final answer
    x = 20,766.48

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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.