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Finding the Fourth Proportional to 14,930.80, 20,605.25 and 8,558.12

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Solution

The fourth proportional to 14,930.80, 20,605.25 and 8,558.12 is: 11,810.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,930.80 : 20,605.25 = 8,558.12 : x
  2. Step 2: Convert to fraction form
    14,930.80/20,605.25 = 8,558.12/x
  3. Step 3: Cross multiply
    14,930.80x = 20,605.25 × 8,558.12
  4. Step 4: Simplify right side
    14,930.80x = 176,342,275.04
  5. Step 5: Solve for x
    x = 176,342,275.04/14,930.80
  6. Step 6: Final answer
    x = 11,810.64

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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.