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Finding the Fourth Proportional to 27,719.88, 38,239.72 and 19,655.25

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Solution

The fourth proportional to 27,719.88, 38,239.72 and 19,655.25 is: 27,114.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,719.88 : 38,239.72 = 19,655.25 : x
  2. Step 2: Convert to fraction form
    27,719.88/38,239.72 = 19,655.25/x
  3. Step 3: Cross multiply
    27,719.88x = 38,239.72 × 19,655.25
  4. Step 4: Simplify right side
    27,719.88x = 751,611,256.53
  5. Step 5: Solve for x
    x = 751,611,256.53/27,719.88
  6. Step 6: Final answer
    x = 27,114.52

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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.