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Finding the Fourth Proportional to 13,669.92, 18,864.02 and 8,364.74

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Solution

The fourth proportional to 13,669.92, 18,864.02 and 8,364.74 is: 11,543.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,669.92 : 18,864.02 = 8,364.74 : x
  2. Step 2: Convert to fraction form
    13,669.92/18,864.02 = 8,364.74/x
  3. Step 3: Cross multiply
    13,669.92x = 18,864.02 × 8,364.74
  4. Step 4: Simplify right side
    13,669.92x = 157,792,549.25
  5. Step 5: Solve for x
    x = 157,792,549.25/13,669.92
  6. Step 6: Final answer
    x = 11,543.05

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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.