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Finding the Fourth Proportional to 18,279, 25,215.30 and 13,798.08

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Solution

The fourth proportional to 18,279, 25,215.30 and 13,798.08 is: 19,034.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279 : 25,215.30 = 13,798.08 : x
  2. Step 2: Convert to fraction form
    18,279/25,215.30 = 13,798.08/x
  3. Step 3: Cross multiply
    18,279x = 25,215.30 × 13,798.08
  4. Step 4: Simplify right side
    18,279x = 347,922,726.62
  5. Step 5: Solve for x
    x = 347,922,726.62/18,279
  6. Step 6: Final answer
    x = 19,034.01

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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.