Home / 30,837.06-42,512.82-19,500.90

Finding the Fourth Proportional to 30,837.06, 42,512.82 and 19,500.90

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Solution

The fourth proportional to 30,837.06, 42,512.82 and 19,500.90 is: 26,884.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,837.06 : 42,512.82 = 19,500.90 : x
  2. Step 2: Convert to fraction form
    30,837.06/42,512.82 = 19,500.90/x
  3. Step 3: Cross multiply
    30,837.06x = 42,512.82 × 19,500.90
  4. Step 4: Simplify right side
    30,837.06x = 829,038,251.54
  5. Step 5: Solve for x
    x = 829,038,251.54/30,837.06
  6. Step 6: Final answer
    x = 26,884.48

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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.