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Finding the Fourth Proportional to 18,279, 25,225.20 and 9,895.68

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Solution

The fourth proportional to 18,279, 25,225.20 and 9,895.68 is: 13,656.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279 : 25,225.20 = 9,895.68 : x
  2. Step 2: Convert to fraction form
    18,279/25,225.20 = 9,895.68/x
  3. Step 3: Cross multiply
    18,279x = 25,225.20 × 9,895.68
  4. Step 4: Simplify right side
    18,279x = 249,620,507.14
  5. Step 5: Solve for x
    x = 249,620,507.14/18,279
  6. Step 6: Final answer
    x = 13,656.14

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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.