Home / 28,729.98-39,648.90-16,800.30

Finding the Fourth Proportional to 28,729.98, 39,648.90 and 16,800.30

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Solution

The fourth proportional to 28,729.98, 39,648.90 and 16,800.30 is: 23,185.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,729.98 : 39,648.90 = 16,800.30 : x
  2. Step 2: Convert to fraction form
    28,729.98/39,648.90 = 16,800.30/x
  3. Step 3: Cross multiply
    28,729.98x = 39,648.90 × 16,800.30
  4. Step 4: Simplify right side
    28,729.98x = 666,113,414.67
  5. Step 5: Solve for x
    x = 666,113,414.67/28,729.98
  6. Step 6: Final answer
    x = 23,185.31

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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.