Home / 30,878.17-42,611.30-17,449.13

Finding the Fourth Proportional to 30,878.17, 42,611.30 and 17,449.13

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Solution

The fourth proportional to 30,878.17, 42,611.30 and 17,449.13 is: 24,079.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,878.17 : 42,611.30 = 17,449.13 : x
  2. Step 2: Convert to fraction form
    30,878.17/42,611.30 = 17,449.13/x
  3. Step 3: Cross multiply
    30,878.17x = 42,611.30 × 17,449.13
  4. Step 4: Simplify right side
    30,878.17x = 743,530,156.79
  5. Step 5: Solve for x
    x = 743,530,156.79/30,878.17
  6. Step 6: Final answer
    x = 24,079.48

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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.