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Finding the Fourth Proportional to 14,956.86, 20,641.14 and 8,991.30

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Solution

The fourth proportional to 14,956.86, 20,641.14 and 8,991.30 is: 12,408.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,956.86 : 20,641.14 = 8,991.30 : x
  2. Step 2: Convert to fraction form
    14,956.86/20,641.14 = 8,991.30/x
  3. Step 3: Cross multiply
    14,956.86x = 20,641.14 × 8,991.30
  4. Step 4: Simplify right side
    14,956.86x = 185,590,682.08
  5. Step 5: Solve for x
    x = 185,590,682.08/14,956.86
  6. Step 6: Final answer
    x = 12,408.40

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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.