Home / 12,289.16-18,433.10-3,969.04

Finding the Fourth Proportional to 12,289.16, 18,433.10 and 3,969.04

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Solution

The fourth proportional to 12,289.16, 18,433.10 and 3,969.04 is: 5,953.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.16 : 18,433.10 = 3,969.04 : x
  2. Step 2: Convert to fraction form
    12,289.16/18,433.10 = 3,969.04/x
  3. Step 3: Cross multiply
    12,289.16x = 18,433.10 × 3,969.04
  4. Step 4: Simplify right side
    12,289.16x = 73,161,711.22
  5. Step 5: Solve for x
    x = 73,161,711.22/12,289.16
  6. Step 6: Final answer
    x = 5,953.35

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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.