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Finding the Fourth Proportional to 15,297.76, 21,110.64 and 8,583.40

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Solution

The fourth proportional to 15,297.76, 21,110.64 and 8,583.40 is: 11,844.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,297.76 : 21,110.64 = 8,583.40 : x
  2. Step 2: Convert to fraction form
    15,297.76/21,110.64 = 8,583.40/x
  3. Step 3: Cross multiply
    15,297.76x = 21,110.64 × 8,583.40
  4. Step 4: Simplify right side
    15,297.76x = 181,201,067.38
  5. Step 5: Solve for x
    x = 181,201,067.38/15,297.76
  6. Step 6: Final answer
    x = 11,844.94

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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.