Home / 31,555.72-47,319.77-11,820.44

Finding the Fourth Proportional to 31,555.72, 47,319.77 and 11,820.44

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Solution

The fourth proportional to 31,555.72, 47,319.77 and 11,820.44 is: 17,725.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,555.72 : 47,319.77 = 11,820.44 : x
  2. Step 2: Convert to fraction form
    31,555.72/47,319.77 = 11,820.44/x
  3. Step 3: Cross multiply
    31,555.72x = 47,319.77 × 11,820.44
  4. Step 4: Simplify right side
    31,555.72x = 559,340,502.10
  5. Step 5: Solve for x
    x = 559,340,502.10/31,555.72
  6. Step 6: Final answer
    x = 17,725.49

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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.