Home / 30,439.25-42,010.14-17,013.30

Finding the Fourth Proportional to 30,439.25, 42,010.14 and 17,013.30

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Solution

The fourth proportional to 30,439.25, 42,010.14 and 17,013.30 is: 23,480.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,439.25 : 42,010.14 = 17,013.30 : x
  2. Step 2: Convert to fraction form
    30,439.25/42,010.14 = 17,013.30/x
  3. Step 3: Cross multiply
    30,439.25x = 42,010.14 × 17,013.30
  4. Step 4: Simplify right side
    30,439.25x = 714,731,114.86
  5. Step 5: Solve for x
    x = 714,731,114.86/30,439.25
  6. Step 6: Final answer
    x = 23,480.58

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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.