Home / 31,779.05-43,855.09-17,631.86

Finding the Fourth Proportional to 31,779.05, 43,855.09 and 17,631.86

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Solution

The fourth proportional to 31,779.05, 43,855.09 and 17,631.86 is: 24,331.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,779.05 : 43,855.09 = 17,631.86 : x
  2. Step 2: Convert to fraction form
    31,779.05/43,855.09 = 17,631.86/x
  3. Step 3: Cross multiply
    31,779.05x = 43,855.09 × 17,631.86
  4. Step 4: Simplify right side
    31,779.05x = 773,246,587.89
  5. Step 5: Solve for x
    x = 773,246,587.89/31,779.05
  6. Step 6: Final answer
    x = 24,331.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.