Home / 19,781.07-27,297.77-10,828.50

Finding the Fourth Proportional to 19,781.07, 27,297.77 and 10,828.50

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Solution

The fourth proportional to 19,781.07, 27,297.77 and 10,828.50 is: 14,943.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,781.07 : 27,297.77 = 10,828.50 : x
  2. Step 2: Convert to fraction form
    19,781.07/27,297.77 = 10,828.50/x
  3. Step 3: Cross multiply
    19,781.07x = 27,297.77 × 10,828.50
  4. Step 4: Simplify right side
    19,781.07x = 295,593,848.30
  5. Step 5: Solve for x
    x = 295,593,848.30/19,781.07
  6. Step 6: Final answer
    x = 14,943.27

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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.