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Finding the Fourth Proportional to 15,226.98, 21,004.47 and 8,938.14

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Solution

The fourth proportional to 15,226.98, 21,004.47 and 8,938.14 is: 12,329.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,226.98 : 21,004.47 = 8,938.14 : x
  2. Step 2: Convert to fraction form
    15,226.98/21,004.47 = 8,938.14/x
  3. Step 3: Cross multiply
    15,226.98x = 21,004.47 × 8,938.14
  4. Step 4: Simplify right side
    15,226.98x = 187,740,893.49
  5. Step 5: Solve for x
    x = 187,740,893.49/15,226.98
  6. Step 6: Final answer
    x = 12,329.49

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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.