Home / 12,293.79-18,440.20-3,528.70

Finding the Fourth Proportional to 12,293.79, 18,440.20 and 3,528.70

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Solution

The fourth proportional to 12,293.79, 18,440.20 and 3,528.70 is: 5,292.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,293.79 : 18,440.20 = 3,528.70 : x
  2. Step 2: Convert to fraction form
    12,293.79/18,440.20 = 3,528.70/x
  3. Step 3: Cross multiply
    12,293.79x = 18,440.20 × 3,528.70
  4. Step 4: Simplify right side
    12,293.79x = 65,069,942.56
  5. Step 5: Solve for x
    x = 65,069,942.56/12,293.79
  6. Step 6: Final answer
    x = 5,292.91

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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.