Home / 19,718.84-29,578.26-11,911.16

Finding the Fourth Proportional to 19,718.84, 29,578.26 and 11,911.16

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Solution

The fourth proportional to 19,718.84, 29,578.26 and 11,911.16 is: 17,866.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,718.84 : 29,578.26 = 11,911.16 : x
  2. Step 2: Convert to fraction form
    19,718.84/29,578.26 = 11,911.16/x
  3. Step 3: Cross multiply
    19,718.84x = 29,578.26 × 11,911.16
  4. Step 4: Simplify right side
    19,718.84x = 352,311,387.38
  5. Step 5: Solve for x
    x = 352,311,387.38/19,718.84
  6. Step 6: Final answer
    x = 17,866.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.