Home / 25,820.60-38,634.90-18,908.60

Finding the Fourth Proportional to 25,820.60, 38,634.90 and 18,908.60

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Solution

The fourth proportional to 25,820.60, 38,634.90 and 18,908.60 is: 28,292.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,820.60 : 38,634.90 = 18,908.60 : x
  2. Step 2: Convert to fraction form
    25,820.60/38,634.90 = 18,908.60/x
  3. Step 3: Cross multiply
    25,820.60x = 38,634.90 × 18,908.60
  4. Step 4: Simplify right side
    25,820.60x = 730,531,870.14
  5. Step 5: Solve for x
    x = 730,531,870.14/25,820.60
  6. Step 6: Final answer
    x = 28,292.60

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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.