Home / 13,621.15-20,430.37-4,855.87

Finding the Fourth Proportional to 13,621.15, 20,430.37 and 4,855.87

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Solution

The fourth proportional to 13,621.15, 20,430.37 and 4,855.87 is: 7,283.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.15 : 20,430.37 = 4,855.87 : x
  2. Step 2: Convert to fraction form
    13,621.15/20,430.37 = 4,855.87/x
  3. Step 3: Cross multiply
    13,621.15x = 20,430.37 × 4,855.87
  4. Step 4: Simplify right side
    13,621.15x = 99,207,220.77
  5. Step 5: Solve for x
    x = 99,207,220.77/13,621.15
  6. Step 6: Final answer
    x = 7,283.32

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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.