Home / 30,699.64-42,362.06-17,270.61

Finding the Fourth Proportional to 30,699.64, 42,362.06 and 17,270.61

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Solution

The fourth proportional to 30,699.64, 42,362.06 and 17,270.61 is: 23,831.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,699.64 : 42,362.06 = 17,270.61 : x
  2. Step 2: Convert to fraction form
    30,699.64/42,362.06 = 17,270.61/x
  3. Step 3: Cross multiply
    30,699.64x = 42,362.06 × 17,270.61
  4. Step 4: Simplify right side
    30,699.64x = 731,618,530.70
  5. Step 5: Solve for x
    x = 731,618,530.70/30,699.64
  6. Step 6: Final answer
    x = 23,831.51

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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.