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Finding the Fourth Proportional to 18,336, 25,292.16 and 14,618.88

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Solution

The fourth proportional to 18,336, 25,292.16 and 14,618.88 is: 20,164.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,336 : 25,292.16 = 14,618.88 : x
  2. Step 2: Convert to fraction form
    18,336/25,292.16 = 14,618.88/x
  3. Step 3: Cross multiply
    18,336x = 25,292.16 × 14,618.88
  4. Step 4: Simplify right side
    18,336x = 369,743,051.98
  5. Step 5: Solve for x
    x = 369,743,051.98/18,336
  6. Step 6: Final answer
    x = 20,164.87

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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.