Home / 31,290.15-43,180.47-17,142.96

Finding the Fourth Proportional to 31,290.15, 43,180.47 and 17,142.96

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Solution

The fourth proportional to 31,290.15, 43,180.47 and 17,142.96 is: 23,657.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,290.15 : 43,180.47 = 17,142.96 : x
  2. Step 2: Convert to fraction form
    31,290.15/43,180.47 = 17,142.96/x
  3. Step 3: Cross multiply
    31,290.15x = 43,180.47 × 17,142.96
  4. Step 4: Simplify right side
    31,290.15x = 740,241,069.99
  5. Step 5: Solve for x
    x = 740,241,069.99/31,290.15
  6. Step 6: Final answer
    x = 23,657.32

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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.