Home / 13,941.81-20,913.67-5,621.90

Finding the Fourth Proportional to 13,941.81, 20,913.67 and 5,621.90

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Solution

The fourth proportional to 13,941.81, 20,913.67 and 5,621.90 is: 8,433.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,941.81 : 20,913.67 = 5,621.90 : x
  2. Step 2: Convert to fraction form
    13,941.81/20,913.67 = 5,621.90/x
  3. Step 3: Cross multiply
    13,941.81x = 20,913.67 × 5,621.90
  4. Step 4: Simplify right side
    13,941.81x = 117,574,463.83
  5. Step 5: Solve for x
    x = 117,574,463.83/13,941.81
  6. Step 6: Final answer
    x = 8,433.23

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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.