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Finding the Fourth Proportional to 19,651.65, 27,119.79 and 10,699.74

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Solution

The fourth proportional to 19,651.65, 27,119.79 and 10,699.74 is: 14,765.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,651.65 : 27,119.79 = 10,699.74 : x
  2. Step 2: Convert to fraction form
    19,651.65/27,119.79 = 10,699.74/x
  3. Step 3: Cross multiply
    19,651.65x = 27,119.79 × 10,699.74
  4. Step 4: Simplify right side
    19,651.65x = 290,174,701.85
  5. Step 5: Solve for x
    x = 290,174,701.85/19,651.65
  6. Step 6: Final answer
    x = 14,765.92

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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.