Home / 20,669.34-30,985.26-7,512.42

Finding the Fourth Proportional to 20,669.34, 30,985.26 and 7,512.42

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Solution

The fourth proportional to 20,669.34, 30,985.26 and 7,512.42 is: 11,261.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.34 : 30,985.26 = 7,512.42 : x
  2. Step 2: Convert to fraction form
    20,669.34/30,985.26 = 7,512.42/x
  3. Step 3: Cross multiply
    20,669.34x = 30,985.26 × 7,512.42
  4. Step 4: Simplify right side
    20,669.34x = 232,774,286.93
  5. Step 5: Solve for x
    x = 232,774,286.93/20,669.34
  6. Step 6: Final answer
    x = 11,261.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.