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Finding the Fourth Proportional to 14,419.80, 19,900.08 and 8,453.39

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Solution

The fourth proportional to 14,419.80, 19,900.08 and 8,453.39 is: 11,666.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,419.80 : 19,900.08 = 8,453.39 : x
  2. Step 2: Convert to fraction form
    14,419.80/19,900.08 = 8,453.39/x
  3. Step 3: Cross multiply
    14,419.80x = 19,900.08 × 8,453.39
  4. Step 4: Simplify right side
    14,419.80x = 168,223,137.27
  5. Step 5: Solve for x
    x = 168,223,137.27/14,419.80
  6. Step 6: Final answer
    x = 11,666.13

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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.