Home / 12,450.64-18,678.69-3,686.23

Finding the Fourth Proportional to 12,450.64, 18,678.69 and 3,686.23

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Solution

The fourth proportional to 12,450.64, 18,678.69 and 3,686.23 is: 5,530.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,450.64 : 18,678.69 = 3,686.23 : x
  2. Step 2: Convert to fraction form
    12,450.64/18,678.69 = 3,686.23/x
  3. Step 3: Cross multiply
    12,450.64x = 18,678.69 × 3,686.23
  4. Step 4: Simplify right side
    12,450.64x = 68,854,018.14
  5. Step 5: Solve for x
    x = 68,854,018.14/12,450.64
  6. Step 6: Final answer
    x = 5,530.16

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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.