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Finding the Fourth Proportional to 18,311, 25,280.02 and 11,602.34

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Solution

The fourth proportional to 18,311, 25,280.02 and 11,602.34 is: 16,018.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,311 : 25,280.02 = 11,602.34 : x
  2. Step 2: Convert to fraction form
    18,311/25,280.02 = 11,602.34/x
  3. Step 3: Cross multiply
    18,311x = 25,280.02 × 11,602.34
  4. Step 4: Simplify right side
    18,311x = 293,307,387.25
  5. Step 5: Solve for x
    x = 293,307,387.25/18,311
  6. Step 6: Final answer
    x = 16,018.10

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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.