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Finding the Fourth Proportional to 14,913.98, 20,579.64 and 8,945.90

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Solution

The fourth proportional to 14,913.98, 20,579.64 and 8,945.90 is: 12,344.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,913.98 : 20,579.64 = 8,945.90 : x
  2. Step 2: Convert to fraction form
    14,913.98/20,579.64 = 8,945.90/x
  3. Step 3: Cross multiply
    14,913.98x = 20,579.64 × 8,945.90
  4. Step 4: Simplify right side
    14,913.98x = 184,103,401.48
  5. Step 5: Solve for x
    x = 184,103,401.48/14,913.98
  6. Step 6: Final answer
    x = 12,344.35

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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.