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Finding the Fourth Proportional to 28,904.18, 39,892 and 16,974.04

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Solution

The fourth proportional to 28,904.18, 39,892 and 16,974.04 is: 23,426.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,904.18 : 39,892 = 16,974.04 : x
  2. Step 2: Convert to fraction form
    28,904.18/39,892 = 16,974.04/x
  3. Step 3: Cross multiply
    28,904.18x = 39,892 × 16,974.04
  4. Step 4: Simplify right side
    28,904.18x = 677,128,403.68
  5. Step 5: Solve for x
    x = 677,128,403.68/28,904.18
  6. Step 6: Final answer
    x = 23,426.66

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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.