Home / 20,274.49-30,408.44-7,123.79

Finding the Fourth Proportional to 20,274.49, 30,408.44 and 7,123.79

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Solution

The fourth proportional to 20,274.49, 30,408.44 and 7,123.79 is: 10,684.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,274.49 : 30,408.44 = 7,123.79 : x
  2. Step 2: Convert to fraction form
    20,274.49/30,408.44 = 7,123.79/x
  3. Step 3: Cross multiply
    20,274.49x = 30,408.44 × 7,123.79
  4. Step 4: Simplify right side
    20,274.49x = 216,623,381.19
  5. Step 5: Solve for x
    x = 216,623,381.19/20,274.49
  6. Step 6: Final answer
    x = 10,684.53

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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.