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Finding the Fourth Proportional to 19,580.70, 27,021.50 and 10,628.20

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Solution

The fourth proportional to 19,580.70, 27,021.50 and 10,628.20 is: 14,666.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,580.70 : 27,021.50 = 10,628.20 : x
  2. Step 2: Convert to fraction form
    19,580.70/27,021.50 = 10,628.20/x
  3. Step 3: Cross multiply
    19,580.70x = 27,021.50 × 10,628.20
  4. Step 4: Simplify right side
    19,580.70x = 287,189,966.65
  5. Step 5: Solve for x
    x = 287,189,966.65/19,580.70
  6. Step 6: Final answer
    x = 14,666.99

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.