Home / 28,913.56-39,904.25-16,978.01

Finding the Fourth Proportional to 28,913.56, 39,904.25 and 16,978.01

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Solution

The fourth proportional to 28,913.56, 39,904.25 and 16,978.01 is: 23,431.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,913.56 : 39,904.25 = 16,978.01 : x
  2. Step 2: Convert to fraction form
    28,913.56/39,904.25 = 16,978.01/x
  3. Step 3: Cross multiply
    28,913.56x = 39,904.25 × 16,978.01
  4. Step 4: Simplify right side
    28,913.56x = 677,494,471.13
  5. Step 5: Solve for x
    x = 677,494,471.13/28,913.56
  6. Step 6: Final answer
    x = 23,431.72

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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.