Home / 19,965.78-27,551.16-11,465.19

Finding the Fourth Proportional to 19,965.78, 27,551.16 and 11,465.19

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Solution

The fourth proportional to 19,965.78, 27,551.16 and 11,465.19 is: 15,821.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,965.78 : 27,551.16 = 11,465.19 : x
  2. Step 2: Convert to fraction form
    19,965.78/27,551.16 = 11,465.19/x
  3. Step 3: Cross multiply
    19,965.78x = 27,551.16 × 11,465.19
  4. Step 4: Simplify right side
    19,965.78x = 315,879,284.12
  5. Step 5: Solve for x
    x = 315,879,284.12/19,965.78
  6. Step 6: Final answer
    x = 15,821.03

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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.