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Finding the Fourth Proportional to 18,275.88, 25,220.72 and 9,892.38

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Solution

The fourth proportional to 18,275.88, 25,220.72 and 9,892.38 is: 13,651.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,275.88 : 25,220.72 = 9,892.38 : x
  2. Step 2: Convert to fraction form
    18,275.88/25,220.72 = 9,892.38/x
  3. Step 3: Cross multiply
    18,275.88x = 25,220.72 × 9,892.38
  4. Step 4: Simplify right side
    18,275.88x = 249,492,896.65
  5. Step 5: Solve for x
    x = 249,492,896.65/18,275.88
  6. Step 6: Final answer
    x = 13,651.48

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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.