Home / 12,300.32-18,450-3,535.20

Finding the Fourth Proportional to 12,300.32, 18,450 and 3,535.20

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Solution

The fourth proportional to 12,300.32, 18,450 and 3,535.20 is: 5,302.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,300.32 : 18,450 = 3,535.20 : x
  2. Step 2: Convert to fraction form
    12,300.32/18,450 = 3,535.20/x
  3. Step 3: Cross multiply
    12,300.32x = 18,450 × 3,535.20
  4. Step 4: Simplify right side
    12,300.32x = 65,224,440
  5. Step 5: Solve for x
    x = 65,224,440/12,300.32
  6. Step 6: Final answer
    x = 5,302.66

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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.