Home / 15,123.27-20,868.93-8,408.49

Finding the Fourth Proportional to 15,123.27, 20,868.93 and 8,408.49

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Solution

The fourth proportional to 15,123.27, 20,868.93 and 8,408.49 is: 11,603.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,123.27 : 20,868.93 = 8,408.49 : x
  2. Step 2: Convert to fraction form
    15,123.27/20,868.93 = 8,408.49/x
  3. Step 3: Cross multiply
    15,123.27x = 20,868.93 × 8,408.49
  4. Step 4: Simplify right side
    15,123.27x = 175,476,189.22
  5. Step 5: Solve for x
    x = 175,476,189.22/15,123.27
  6. Step 6: Final answer
    x = 11,603.06

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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.