Home / 30,885.88-42,627.09-19,556.43

Finding the Fourth Proportional to 30,885.88, 42,627.09 and 19,556.43

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Solution

The fourth proportional to 30,885.88, 42,627.09 and 19,556.43 is: 26,990.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,885.88 : 42,627.09 = 19,556.43 : x
  2. Step 2: Convert to fraction form
    30,885.88/42,627.09 = 19,556.43/x
  3. Step 3: Cross multiply
    30,885.88x = 42,627.09 × 19,556.43
  4. Step 4: Simplify right side
    30,885.88x = 833,633,390.77
  5. Step 5: Solve for x
    x = 833,633,390.77/30,885.88
  6. Step 6: Final answer
    x = 26,990.76

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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.