Home / 10,408.40-15,614.60-4,485.20

Finding the Fourth Proportional to 10,408.40, 15,614.60 and 4,485.20

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Solution

The fourth proportional to 10,408.40, 15,614.60 and 4,485.20 is: 6,728.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,408.40 : 15,614.60 = 4,485.20 : x
  2. Step 2: Convert to fraction form
    10,408.40/15,614.60 = 4,485.20/x
  3. Step 3: Cross multiply
    10,408.40x = 15,614.60 × 4,485.20
  4. Step 4: Simplify right side
    10,408.40x = 70,034,603.92
  5. Step 5: Solve for x
    x = 70,034,603.92/10,408.40
  6. Step 6: Final answer
    x = 6,728.66

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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.