Home / 30,611.01-42,246.26-20,560.43

Finding the Fourth Proportional to 30,611.01, 42,246.26 and 20,560.43

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Solution

The fourth proportional to 30,611.01, 42,246.26 and 20,560.43 is: 28,375.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,611.01 : 42,246.26 = 20,560.43 : x
  2. Step 2: Convert to fraction form
    30,611.01/42,246.26 = 20,560.43/x
  3. Step 3: Cross multiply
    30,611.01x = 42,246.26 × 20,560.43
  4. Step 4: Simplify right side
    30,611.01x = 868,601,351.41
  5. Step 5: Solve for x
    x = 868,601,351.41/30,611.01
  6. Step 6: Final answer
    x = 28,375.45

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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.