Home / 15,122.04-20,868.48-8,408.28

Finding the Fourth Proportional to 15,122.04, 20,868.48 and 8,408.28

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Solution

The fourth proportional to 15,122.04, 20,868.48 and 8,408.28 is: 11,603.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,122.04 : 20,868.48 = 8,408.28 : x
  2. Step 2: Convert to fraction form
    15,122.04/20,868.48 = 8,408.28/x
  3. Step 3: Cross multiply
    15,122.04x = 20,868.48 × 8,408.28
  4. Step 4: Simplify right side
    15,122.04x = 175,468,023.01
  5. Step 5: Solve for x
    x = 175,468,023.01/15,122.04
  6. Step 6: Final answer
    x = 11,603.46

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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.