Home / 30,753.14-42,440.44-17,142.40

Finding the Fourth Proportional to 30,753.14, 42,440.44 and 17,142.40

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Solution

The fourth proportional to 30,753.14, 42,440.44 and 17,142.40 is: 23,657.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,753.14 : 42,440.44 = 17,142.40 : x
  2. Step 2: Convert to fraction form
    30,753.14/42,440.44 = 17,142.40/x
  3. Step 3: Cross multiply
    30,753.14x = 42,440.44 × 17,142.40
  4. Step 4: Simplify right side
    30,753.14x = 727,530,998.66
  5. Step 5: Solve for x
    x = 727,530,998.66/30,753.14
  6. Step 6: Final answer
    x = 23,657.13

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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.