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Finding the Fourth Proportional to 14,001.78, 21,010.99 and 7,076.98

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Solution

The fourth proportional to 14,001.78, 21,010.99 and 7,076.98 is: 10,619.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,001.78 : 21,010.99 = 7,076.98 : x
  2. Step 2: Convert to fraction form
    14,001.78/21,010.99 = 7,076.98/x
  3. Step 3: Cross multiply
    14,001.78x = 21,010.99 × 7,076.98
  4. Step 4: Simplify right side
    14,001.78x = 148,694,356.01
  5. Step 5: Solve for x
    x = 148,694,356.01/14,001.78
  6. Step 6: Final answer
    x = 10,619.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.