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Finding the Fourth Proportional to 14,886.86, 20,540.03 and 8,914.28

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Solution

The fourth proportional to 14,886.86, 20,540.03 and 8,914.28 is: 12,299.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,886.86 : 20,540.03 = 8,914.28 : x
  2. Step 2: Convert to fraction form
    14,886.86/20,540.03 = 8,914.28/x
  3. Step 3: Cross multiply
    14,886.86x = 20,540.03 × 8,914.28
  4. Step 4: Simplify right side
    14,886.86x = 183,099,431.36
  5. Step 5: Solve for x
    x = 183,099,431.36/14,886.86
  6. Step 6: Final answer
    x = 12,299.40

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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.