Home / 31,370.90-47,027.48-13,590.39

Finding the Fourth Proportional to 31,370.90, 47,027.48 and 13,590.39

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Solution

The fourth proportional to 31,370.90, 47,027.48 and 13,590.39 is: 20,373.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,370.90 : 47,027.48 = 13,590.39 : x
  2. Step 2: Convert to fraction form
    31,370.90/47,027.48 = 13,590.39/x
  3. Step 3: Cross multiply
    31,370.90x = 47,027.48 × 13,590.39
  4. Step 4: Simplify right side
    31,370.90x = 639,121,725.97
  5. Step 5: Solve for x
    x = 639,121,725.97/31,370.90
  6. Step 6: Final answer
    x = 20,373.07

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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.