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Finding the Fourth Proportional to 9,920.85, 14,881.69 and 4,372.92

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Solution

The fourth proportional to 9,920.85, 14,881.69 and 4,372.92 is: 6,559.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,920.85 : 14,881.69 = 4,372.92 : x
  2. Step 2: Convert to fraction form
    9,920.85/14,881.69 = 4,372.92/x
  3. Step 3: Cross multiply
    9,920.85x = 14,881.69 × 4,372.92
  4. Step 4: Simplify right side
    9,920.85x = 65,076,445.30
  5. Step 5: Solve for x
    x = 65,076,445.30/9,920.85
  6. Step 6: Final answer
    x = 6,559.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.