Home / 12,289.52-18,431.75-3,522.49

Finding the Fourth Proportional to 12,289.52, 18,431.75 and 3,522.49

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Solution

The fourth proportional to 12,289.52, 18,431.75 and 3,522.49 is: 5,283.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.52 : 18,431.75 = 3,522.49 : x
  2. Step 2: Convert to fraction form
    12,289.52/18,431.75 = 3,522.49/x
  3. Step 3: Cross multiply
    12,289.52x = 18,431.75 × 3,522.49
  4. Step 4: Simplify right side
    12,289.52x = 64,925,617.78
  5. Step 5: Solve for x
    x = 64,925,617.78/12,289.52
  6. Step 6: Final answer
    x = 5,283.01

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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.