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Finding the Fourth Proportional to 18,278.64, 25,224.51 and 9,895.14

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Solution

The fourth proportional to 18,278.64, 25,224.51 and 9,895.14 is: 13,655.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.64 : 25,224.51 = 9,895.14 : x
  2. Step 2: Convert to fraction form
    18,278.64/25,224.51 = 9,895.14/x
  3. Step 3: Cross multiply
    18,278.64x = 25,224.51 × 9,895.14
  4. Step 4: Simplify right side
    18,278.64x = 249,600,057.88
  5. Step 5: Solve for x
    x = 249,600,057.88/18,278.64
  6. Step 6: Final answer
    x = 13,655.29

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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.