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Finding the Fourth Proportional to 19,620.99, 27,077.49 and 10,669.10

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Solution

The fourth proportional to 19,620.99, 27,077.49 and 10,669.10 is: 14,723.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,620.99 : 27,077.49 = 10,669.10 : x
  2. Step 2: Convert to fraction form
    19,620.99/27,077.49 = 10,669.10/x
  3. Step 3: Cross multiply
    19,620.99x = 27,077.49 × 10,669.10
  4. Step 4: Simplify right side
    19,620.99x = 288,892,313.17
  5. Step 5: Solve for x
    x = 288,892,313.17/19,620.99
  6. Step 6: Final answer
    x = 14,723.64

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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.