Home / 31,616.72-43,505.16-30,654.80

Finding the Fourth Proportional to 31,616.72, 43,505.16 and 30,654.80

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Solution

The fourth proportional to 31,616.72, 43,505.16 and 30,654.80 is: 42,181.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,616.72 : 43,505.16 = 30,654.80 : x
  2. Step 2: Convert to fraction form
    31,616.72/43,505.16 = 30,654.80/x
  3. Step 3: Cross multiply
    31,616.72x = 43,505.16 × 30,654.80
  4. Step 4: Simplify right side
    31,616.72x = 1,333,641,978.77
  5. Step 5: Solve for x
    x = 1,333,641,978.77/31,616.72
  6. Step 6: Final answer
    x = 42,181.54

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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.