Home / 19,983.77-27,578.28-11,487.47

Finding the Fourth Proportional to 19,983.77, 27,578.28 and 11,487.47

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Solution

The fourth proportional to 19,983.77, 27,578.28 and 11,487.47 is: 15,853.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,983.77 : 27,578.28 = 11,487.47 : x
  2. Step 2: Convert to fraction form
    19,983.77/27,578.28 = 11,487.47/x
  3. Step 3: Cross multiply
    19,983.77x = 27,578.28 × 11,487.47
  4. Step 4: Simplify right side
    19,983.77x = 316,804,526.26
  5. Step 5: Solve for x
    x = 316,804,526.26/19,983.77
  6. Step 6: Final answer
    x = 15,853.10

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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.