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Finding the Fourth Proportional to 14,590.90, 20,134.62 and 8,623.12

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Solution

The fourth proportional to 14,590.90, 20,134.62 and 8,623.12 is: 11,899.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,590.90 : 20,134.62 = 8,623.12 : x
  2. Step 2: Convert to fraction form
    14,590.90/20,134.62 = 8,623.12/x
  3. Step 3: Cross multiply
    14,590.90x = 20,134.62 × 8,623.12
  4. Step 4: Simplify right side
    14,590.90x = 173,623,244.41
  5. Step 5: Solve for x
    x = 173,623,244.41/14,590.90
  6. Step 6: Final answer
    x = 11,899.42

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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.