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Finding the Fourth Proportional to 12,903.44, 17,806.39 and 7,237.71

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Solution

The fourth proportional to 12,903.44, 17,806.39 and 7,237.71 is: 9,987.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,903.44 : 17,806.39 = 7,237.71 : x
  2. Step 2: Convert to fraction form
    12,903.44/17,806.39 = 7,237.71/x
  3. Step 3: Cross multiply
    12,903.44x = 17,806.39 × 7,237.71
  4. Step 4: Simplify right side
    12,903.44x = 128,877,468.87
  5. Step 5: Solve for x
    x = 128,877,468.87/12,903.44
  6. Step 6: Final answer
    x = 9,987.84

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Half scale
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Double scale
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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.