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Finding the Fourth Proportional to 25,297.67, 34,913.15 and 18,913.20

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Solution

The fourth proportional to 25,297.67, 34,913.15 and 18,913.20 is: 26,101.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,297.67 : 34,913.15 = 18,913.20 : x
  2. Step 2: Convert to fraction form
    25,297.67/34,913.15 = 18,913.20/x
  3. Step 3: Cross multiply
    25,297.67x = 34,913.15 × 18,913.20
  4. Step 4: Simplify right side
    25,297.67x = 660,319,388.58
  5. Step 5: Solve for x
    x = 660,319,388.58/25,297.67
  6. Step 6: Final answer
    x = 26,101.98

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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.