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Finding the Fourth Proportional to 14,904.66, 20,568.54 and 8,190.42

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Solution

The fourth proportional to 14,904.66, 20,568.54 and 8,190.42 is: 11,302.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,904.66 : 20,568.54 = 8,190.42 : x
  2. Step 2: Convert to fraction form
    14,904.66/20,568.54 = 8,190.42/x
  3. Step 3: Cross multiply
    14,904.66x = 20,568.54 × 8,190.42
  4. Step 4: Simplify right side
    14,904.66x = 168,464,981.39
  5. Step 5: Solve for x
    x = 168,464,981.39/14,904.66
  6. Step 6: Final answer
    x = 11,302.84

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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.