Home / 30,687.90-42,350.04-17,076.12

Finding the Fourth Proportional to 30,687.90, 42,350.04 and 17,076.12

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Solution

The fourth proportional to 30,687.90, 42,350.04 and 17,076.12 is: 23,565.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,687.90 : 42,350.04 = 17,076.12 : x
  2. Step 2: Convert to fraction form
    30,687.90/42,350.04 = 17,076.12/x
  3. Step 3: Cross multiply
    30,687.90x = 42,350.04 × 17,076.12
  4. Step 4: Simplify right side
    30,687.90x = 723,174,365.04
  5. Step 5: Solve for x
    x = 723,174,365.04/30,687.90
  6. Step 6: Final answer
    x = 23,565.46

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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.