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Finding the Fourth Proportional to 19,645.79, 27,109.80 and 10,693.10

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Solution

The fourth proportional to 19,645.79, 27,109.80 and 10,693.10 is: 14,755.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,645.79 : 27,109.80 = 10,693.10 : x
  2. Step 2: Convert to fraction form
    19,645.79/27,109.80 = 10,693.10/x
  3. Step 3: Cross multiply
    19,645.79x = 27,109.80 × 10,693.10
  4. Step 4: Simplify right side
    19,645.79x = 289,887,847.07
  5. Step 5: Solve for x
    x = 289,887,847.07/19,645.79
  6. Step 6: Final answer
    x = 14,755.72

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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.