Home / 28,919.64-39,906.78-16,973.40

Finding the Fourth Proportional to 28,919.64, 39,906.78 and 16,973.40

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Solution

The fourth proportional to 28,919.64, 39,906.78 and 16,973.40 is: 23,421.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,919.64 : 39,906.78 = 16,973.40 : x
  2. Step 2: Convert to fraction form
    28,919.64/39,906.78 = 16,973.40/x
  3. Step 3: Cross multiply
    28,919.64x = 39,906.78 × 16,973.40
  4. Step 4: Simplify right side
    28,919.64x = 677,353,739.65
  5. Step 5: Solve for x
    x = 677,353,739.65/28,919.64
  6. Step 6: Final answer
    x = 23,421.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.