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Finding the Fourth Proportional to 14,930.19, 20,604.65 and 9,885.65

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Solution

The fourth proportional to 14,930.19, 20,604.65 and 9,885.65 is: 13,642.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,930.19 : 20,604.65 = 9,885.65 : x
  2. Step 2: Convert to fraction form
    14,930.19/20,604.65 = 9,885.65/x
  3. Step 3: Cross multiply
    14,930.19x = 20,604.65 × 9,885.65
  4. Step 4: Simplify right side
    14,930.19x = 203,690,205.82
  5. Step 5: Solve for x
    x = 203,690,205.82/14,930.19
  6. Step 6: Final answer
    x = 13,642.84

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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.