Home / 30,877.62-42,611.88-18,934.02

Finding the Fourth Proportional to 30,877.62, 42,611.88 and 18,934.02

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Solution

The fourth proportional to 30,877.62, 42,611.88 and 18,934.02 is: 26,129.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,877.62 : 42,611.88 = 18,934.02 : x
  2. Step 2: Convert to fraction form
    30,877.62/42,611.88 = 18,934.02/x
  3. Step 3: Cross multiply
    30,877.62x = 42,611.88 × 18,934.02
  4. Step 4: Simplify right side
    30,877.62x = 806,814,188.16
  5. Step 5: Solve for x
    x = 806,814,188.16/30,877.62
  6. Step 6: Final answer
    x = 26,129.42

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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.