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Finding the Fourth Proportional to 14,989.25, 20,685.17 and 8,365.25

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Solution

The fourth proportional to 14,989.25, 20,685.17 and 8,365.25 is: 11,544.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,989.25 : 20,685.17 = 8,365.25 : x
  2. Step 2: Convert to fraction form
    14,989.25/20,685.17 = 8,365.25/x
  3. Step 3: Cross multiply
    14,989.25x = 20,685.17 × 8,365.25
  4. Step 4: Simplify right side
    14,989.25x = 173,036,618.34
  5. Step 5: Solve for x
    x = 173,036,618.34/14,989.25
  6. Step 6: Final answer
    x = 11,544.05

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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.