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Finding the Fourth Proportional to 18,274.63, 25,219.05 and 9,891.13

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Solution

The fourth proportional to 18,274.63, 25,219.05 and 9,891.13 is: 13,649.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,274.63 : 25,219.05 = 9,891.13 : x
  2. Step 2: Convert to fraction form
    18,274.63/25,219.05 = 9,891.13/x
  3. Step 3: Cross multiply
    18,274.63x = 25,219.05 × 9,891.13
  4. Step 4: Simplify right side
    18,274.63x = 249,444,902.03
  5. Step 5: Solve for x
    x = 249,444,902.03/18,274.63
  6. Step 6: Final answer
    x = 13,649.79

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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.