Home / 31,354.64-47,046.36-13,590.72

Finding the Fourth Proportional to 31,354.64, 47,046.36 and 13,590.72

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Solution

The fourth proportional to 31,354.64, 47,046.36 and 13,590.72 is: 20,392.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,354.64 : 47,046.36 = 13,590.72 : x
  2. Step 2: Convert to fraction form
    31,354.64/47,046.36 = 13,590.72/x
  3. Step 3: Cross multiply
    31,354.64x = 47,046.36 × 13,590.72
  4. Step 4: Simplify right side
    31,354.64x = 639,393,905.78
  5. Step 5: Solve for x
    x = 639,393,905.78/31,354.64
  6. Step 6: Final answer
    x = 20,392.32

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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.