Home / 19,664.09-27,132.13-12,859.68

Finding the Fourth Proportional to 19,664.09, 27,132.13 and 12,859.68

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Solution

The fourth proportional to 19,664.09, 27,132.13 and 12,859.68 is: 17,743.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,664.09 : 27,132.13 = 12,859.68 : x
  2. Step 2: Convert to fraction form
    19,664.09/27,132.13 = 12,859.68/x
  3. Step 3: Cross multiply
    19,664.09x = 27,132.13 × 12,859.68
  4. Step 4: Simplify right side
    19,664.09x = 348,910,509.52
  5. Step 5: Solve for x
    x = 348,910,509.52/19,664.09
  6. Step 6: Final answer
    x = 17,743.54

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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.