Home / 19,615.44-27,080.48-12,920.52

Finding the Fourth Proportional to 19,615.44, 27,080.48 and 12,920.52

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Solution

The fourth proportional to 19,615.44, 27,080.48 and 12,920.52 is: 17,837.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,615.44 : 27,080.48 = 12,920.52 : x
  2. Step 2: Convert to fraction form
    19,615.44/27,080.48 = 12,920.52/x
  3. Step 3: Cross multiply
    19,615.44x = 27,080.48 × 12,920.52
  4. Step 4: Simplify right side
    19,615.44x = 349,893,883.45
  5. Step 5: Solve for x
    x = 349,893,883.45/19,615.44
  6. Step 6: Final answer
    x = 17,837.68

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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.