Home / 31,659.16-47,488.83-12,939.20

Finding the Fourth Proportional to 31,659.16, 47,488.83 and 12,939.20

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Solution

The fourth proportional to 31,659.16, 47,488.83 and 12,939.20 is: 19,408.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,659.16 : 47,488.83 = 12,939.20 : x
  2. Step 2: Convert to fraction form
    31,659.16/47,488.83 = 12,939.20/x
  3. Step 3: Cross multiply
    31,659.16x = 47,488.83 × 12,939.20
  4. Step 4: Simplify right side
    31,659.16x = 614,467,636.38
  5. Step 5: Solve for x
    x = 614,467,636.38/31,659.16
  6. Step 6: Final answer
    x = 19,408.84

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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.