Home / 28,474.34-39,294.59-15,899.09

Finding the Fourth Proportional to 28,474.34, 39,294.59 and 15,899.09

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Solution

The fourth proportional to 28,474.34, 39,294.59 and 15,899.09 is: 21,940.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,474.34 : 39,294.59 = 15,899.09 : x
  2. Step 2: Convert to fraction form
    28,474.34/39,294.59 = 15,899.09/x
  3. Step 3: Cross multiply
    28,474.34x = 39,294.59 × 15,899.09
  4. Step 4: Simplify right side
    28,474.34x = 624,747,946.95
  5. Step 5: Solve for x
    x = 624,747,946.95/28,474.34
  6. Step 6: Final answer
    x = 21,940.74

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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.