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Finding the Fourth Proportional to 14,889.56, 20,550.12 and 8,605.58

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Solution

The fourth proportional to 14,889.56, 20,550.12 and 8,605.58 is: 11,877.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,889.56 : 20,550.12 = 8,605.58 : x
  2. Step 2: Convert to fraction form
    14,889.56/20,550.12 = 8,605.58/x
  3. Step 3: Cross multiply
    14,889.56x = 20,550.12 × 8,605.58
  4. Step 4: Simplify right side
    14,889.56x = 176,845,701.67
  5. Step 5: Solve for x
    x = 176,845,701.67/14,889.56
  6. Step 6: Final answer
    x = 11,877.16

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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.