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Finding the Fourth Proportional to 18,225.61, 27,328.96 and 8,356.39

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Solution

The fourth proportional to 18,225.61, 27,328.96 and 8,356.39 is: 12,530.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,225.61 : 27,328.96 = 8,356.39 : x
  2. Step 2: Convert to fraction form
    18,225.61/27,328.96 = 8,356.39/x
  3. Step 3: Cross multiply
    18,225.61x = 27,328.96 × 8,356.39
  4. Step 4: Simplify right side
    18,225.61x = 228,371,448.05
  5. Step 5: Solve for x
    x = 228,371,448.05/18,225.61
  6. Step 6: Final answer
    x = 12,530.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.