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Finding the Fourth Proportional to 18,278.69, 25,224.63 and 9,895.19

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Solution

The fourth proportional to 18,278.69, 25,224.63 and 9,895.19 is: 13,655.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.69 : 25,224.63 = 9,895.19 : x
  2. Step 2: Convert to fraction form
    18,278.69/25,224.63 = 9,895.19/x
  3. Step 3: Cross multiply
    18,278.69x = 25,224.63 × 9,895.19
  4. Step 4: Simplify right side
    18,278.69x = 249,602,506.53
  5. Step 5: Solve for x
    x = 249,602,506.53/18,278.69
  6. Step 6: Final answer
    x = 13,655.38

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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.