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Finding the Fourth Proportional to 14,783.19, 20,400.86 and 8,068.96

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Solution

The fourth proportional to 14,783.19, 20,400.86 and 8,068.96 is: 11,135.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,783.19 : 20,400.86 = 8,068.96 : x
  2. Step 2: Convert to fraction form
    14,783.19/20,400.86 = 8,068.96/x
  3. Step 3: Cross multiply
    14,783.19x = 20,400.86 × 8,068.96
  4. Step 4: Simplify right side
    14,783.19x = 164,613,723.31
  5. Step 5: Solve for x
    x = 164,613,723.31/14,783.19
  6. Step 6: Final answer
    x = 11,135.20

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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.