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Finding the Fourth Proportional to 15,908.25, 21,953.39 and 9,284.25

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Solution

The fourth proportional to 15,908.25, 21,953.39 and 9,284.25 is: 12,812.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,908.25 : 21,953.39 = 9,284.25 : x
  2. Step 2: Convert to fraction form
    15,908.25/21,953.39 = 9,284.25/x
  3. Step 3: Cross multiply
    15,908.25x = 21,953.39 × 9,284.25
  4. Step 4: Simplify right side
    15,908.25x = 203,820,714.69
  5. Step 5: Solve for x
    x = 203,820,714.69/15,908.25
  6. Step 6: Final answer
    x = 12,812.27

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Half scale
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Double scale
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Similar ratio
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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.