Home / 28,231.40-38,942.16-16,894.64

Finding the Fourth Proportional to 28,231.40, 38,942.16 and 16,894.64

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Solution

The fourth proportional to 28,231.40, 38,942.16 and 16,894.64 is: 23,304.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,231.40 : 38,942.16 = 16,894.64 : x
  2. Step 2: Convert to fraction form
    28,231.40/38,942.16 = 16,894.64/x
  3. Step 3: Cross multiply
    28,231.40x = 38,942.16 × 16,894.64
  4. Step 4: Simplify right side
    28,231.40x = 657,913,774.02
  5. Step 5: Solve for x
    x = 657,913,774.02/28,231.40
  6. Step 6: Final answer
    x = 23,304.33

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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.