Home / 21,750.90-30,015.82-12,677.96

Finding the Fourth Proportional to 21,750.90, 30,015.82 and 12,677.96

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Solution

The fourth proportional to 21,750.90, 30,015.82 and 12,677.96 is: 17,495.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,750.90 : 30,015.82 = 12,677.96 : x
  2. Step 2: Convert to fraction form
    21,750.90/30,015.82 = 12,677.96/x
  3. Step 3: Cross multiply
    21,750.90x = 30,015.82 × 12,677.96
  4. Step 4: Simplify right side
    21,750.90x = 380,539,365.33
  5. Step 5: Solve for x
    x = 380,539,365.33/21,750.90
  6. Step 6: Final answer
    x = 17,495.34

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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.