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Finding the Fourth Proportional to 28,904.27, 39,891.02 and 16,969.32

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Solution

The fourth proportional to 28,904.27, 39,891.02 and 16,969.32 is: 23,419.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,904.27 : 39,891.02 = 16,969.32 : x
  2. Step 2: Convert to fraction form
    28,904.27/39,891.02 = 16,969.32/x
  3. Step 3: Cross multiply
    28,904.27x = 39,891.02 × 16,969.32
  4. Step 4: Simplify right side
    28,904.27x = 676,923,398.66
  5. Step 5: Solve for x
    x = 676,923,398.66/28,904.27
  6. Step 6: Final answer
    x = 23,419.50

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1.5x scale

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.