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Finding the Fourth Proportional to 18,418.71, 25,417.82 and 10,035.21

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Solution

The fourth proportional to 18,418.71, 25,417.82 and 10,035.21 is: 13,848.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,418.71 : 25,417.82 = 10,035.21 : x
  2. Step 2: Convert to fraction form
    18,418.71/25,417.82 = 10,035.21/x
  3. Step 3: Cross multiply
    18,418.71x = 25,417.82 × 10,035.21
  4. Step 4: Simplify right side
    18,418.71x = 255,073,161.44
  5. Step 5: Solve for x
    x = 255,073,161.44/18,418.71
  6. Step 6: Final answer
    x = 13,848.59

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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.