Home / 25,611.23-38,431.43-20,449.91

Finding the Fourth Proportional to 25,611.23, 38,431.43 and 20,449.91

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Solution

The fourth proportional to 25,611.23, 38,431.43 and 20,449.91 is: 30,686.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,611.23 : 38,431.43 = 20,449.91 : x
  2. Step 2: Convert to fraction form
    25,611.23/38,431.43 = 20,449.91/x
  3. Step 3: Cross multiply
    25,611.23x = 38,431.43 × 20,449.91
  4. Step 4: Simplify right side
    25,611.23x = 785,919,284.67
  5. Step 5: Solve for x
    x = 785,919,284.67/25,611.23
  6. Step 6: Final answer
    x = 30,686.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.