Home / 19,679.59-27,125.37-13,929.61

Finding the Fourth Proportional to 19,679.59, 27,125.37 and 13,929.61

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Solution

The fourth proportional to 19,679.59, 27,125.37 and 13,929.61 is: 19,199.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,679.59 : 27,125.37 = 13,929.61 : x
  2. Step 2: Convert to fraction form
    19,679.59/27,125.37 = 13,929.61/x
  3. Step 3: Cross multiply
    19,679.59x = 27,125.37 × 13,929.61
  4. Step 4: Simplify right side
    19,679.59x = 377,845,825.21
  5. Step 5: Solve for x
    x = 377,845,825.21/19,679.59
  6. Step 6: Final answer
    x = 19,199.88

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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.