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Finding the Fourth Proportional to 18,137.86, 25,028.53 and 10,178.53

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Solution

The fourth proportional to 18,137.86, 25,028.53 and 10,178.53 is: 14,045.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,137.86 : 25,028.53 = 10,178.53 : x
  2. Step 2: Convert to fraction form
    18,137.86/25,028.53 = 10,178.53/x
  3. Step 3: Cross multiply
    18,137.86x = 25,028.53 × 10,178.53
  4. Step 4: Simplify right side
    18,137.86x = 254,753,643.46
  5. Step 5: Solve for x
    x = 254,753,643.46/18,137.86
  6. Step 6: Final answer
    x = 14,045.41

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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.