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Finding the Fourth Proportional to 18,291, 25,239.54 and 10,331.55

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Solution

The fourth proportional to 18,291, 25,239.54 and 10,331.55 is: 14,256.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291 : 25,239.54 = 10,331.55 : x
  2. Step 2: Convert to fraction form
    18,291/25,239.54 = 10,331.55/x
  3. Step 3: Cross multiply
    18,291x = 25,239.54 × 10,331.55
  4. Step 4: Simplify right side
    18,291x = 260,763,569.49
  5. Step 5: Solve for x
    x = 260,763,569.49/18,291
  6. Step 6: Final answer
    x = 14,256.39

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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.