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Finding the Fourth Proportional to 12,264.55, 16,931.37 and 7,230.39

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Solution

The fourth proportional to 12,264.55, 16,931.37 and 7,230.39 is: 9,981.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,264.55 : 16,931.37 = 7,230.39 : x
  2. Step 2: Convert to fraction form
    12,264.55/16,931.37 = 7,230.39/x
  3. Step 3: Cross multiply
    12,264.55x = 16,931.37 × 7,230.39
  4. Step 4: Simplify right side
    12,264.55x = 122,420,408.33
  5. Step 5: Solve for x
    x = 122,420,408.33/12,264.55
  6. Step 6: Final answer
    x = 9,981.65

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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.