Home / 12,405.63-18,609.56-3,521.04

Finding the Fourth Proportional to 12,405.63, 18,609.56 and 3,521.04

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Solution

The fourth proportional to 12,405.63, 18,609.56 and 3,521.04 is: 5,281.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405.63 : 18,609.56 = 3,521.04 : x
  2. Step 2: Convert to fraction form
    12,405.63/18,609.56 = 3,521.04/x
  3. Step 3: Cross multiply
    12,405.63x = 18,609.56 × 3,521.04
  4. Step 4: Simplify right side
    12,405.63x = 65,525,005.14
  5. Step 5: Solve for x
    x = 65,525,005.14/12,405.63
  6. Step 6: Final answer
    x = 5,281.88

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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.