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Finding the Fourth Proportional to 14,837.40, 20,478.03 and 8,553.42

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Solution

The fourth proportional to 14,837.40, 20,478.03 and 8,553.42 is: 11,805.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,837.40 : 20,478.03 = 8,553.42 : x
  2. Step 2: Convert to fraction form
    14,837.40/20,478.03 = 8,553.42/x
  3. Step 3: Cross multiply
    14,837.40x = 20,478.03 × 8,553.42
  4. Step 4: Simplify right side
    14,837.40x = 175,157,191.36
  5. Step 5: Solve for x
    x = 175,157,191.36/14,837.40
  6. Step 6: Final answer
    x = 11,805.11

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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.