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Finding the Fourth Proportional to 15,296.85, 21,109.64 and 8,927.82

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Solution

The fourth proportional to 15,296.85, 21,109.64 and 8,927.82 is: 12,320.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,296.85 : 21,109.64 = 8,927.82 : x
  2. Step 2: Convert to fraction form
    15,296.85/21,109.64 = 8,927.82/x
  3. Step 3: Cross multiply
    15,296.85x = 21,109.64 × 8,927.82
  4. Step 4: Simplify right side
    15,296.85x = 188,463,021.55
  5. Step 5: Solve for x
    x = 188,463,021.55/15,296.85
  6. Step 6: Final answer
    x = 12,320.38

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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.