Home / 25,420.50-38,144.05-18,458.03

Finding the Fourth Proportional to 25,420.50, 38,144.05 and 18,458.03

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Solution

The fourth proportional to 25,420.50, 38,144.05 and 18,458.03 is: 27,696.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,420.50 : 38,144.05 = 18,458.03 : x
  2. Step 2: Convert to fraction form
    25,420.50/38,144.05 = 18,458.03/x
  3. Step 3: Cross multiply
    25,420.50x = 38,144.05 × 18,458.03
  4. Step 4: Simplify right side
    25,420.50x = 704,063,853.88
  5. Step 5: Solve for x
    x = 704,063,853.88/25,420.50
  6. Step 6: Final answer
    x = 27,696.70

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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.