Home / 31,354.61-43,304.99-21,265.49

Finding the Fourth Proportional to 31,354.61, 43,304.99 and 21,265.49

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Solution

The fourth proportional to 31,354.61, 43,304.99 and 21,265.49 is: 29,370.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,354.61 : 43,304.99 = 21,265.49 : x
  2. Step 2: Convert to fraction form
    31,354.61/43,304.99 = 21,265.49/x
  3. Step 3: Cross multiply
    31,354.61x = 43,304.99 × 21,265.49
  4. Step 4: Simplify right side
    31,354.61x = 920,901,508.94
  5. Step 5: Solve for x
    x = 920,901,508.94/31,354.61
  6. Step 6: Final answer
    x = 29,370.53

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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.