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Finding the Fourth Proportional to 31,348.98, 43,260.93 and 17,920.98

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Solution

The fourth proportional to 31,348.98, 43,260.93 and 17,920.98 is: 24,730.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,348.98 : 43,260.93 = 17,920.98 : x
  2. Step 2: Convert to fraction form
    31,348.98/43,260.93 = 17,920.98/x
  3. Step 3: Cross multiply
    31,348.98x = 43,260.93 × 17,920.98
  4. Step 4: Simplify right side
    31,348.98x = 775,278,261.31
  5. Step 5: Solve for x
    x = 775,278,261.31/31,348.98
  6. Step 6: Final answer
    x = 24,730.57

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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.