Home / 19,685.10-27,165.48-11,727.45

Finding the Fourth Proportional to 19,685.10, 27,165.48 and 11,727.45

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Solution

The fourth proportional to 19,685.10, 27,165.48 and 11,727.45 is: 16,183.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,685.10 : 27,165.48 = 11,727.45 : x
  2. Step 2: Convert to fraction form
    19,685.10/27,165.48 = 11,727.45/x
  3. Step 3: Cross multiply
    19,685.10x = 27,165.48 × 11,727.45
  4. Step 4: Simplify right side
    19,685.10x = 318,581,808.43
  5. Step 5: Solve for x
    x = 318,581,808.43/19,685.10
  6. Step 6: Final answer
    x = 16,183.91

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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.