Home / 28,748.90-39,671.70-16,811.52

Finding the Fourth Proportional to 28,748.90, 39,671.70 and 16,811.52

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Solution

The fourth proportional to 28,748.90, 39,671.70 and 16,811.52 is: 23,198.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,748.90 : 39,671.70 = 16,811.52 : x
  2. Step 2: Convert to fraction form
    28,748.90/39,671.70 = 16,811.52/x
  3. Step 3: Cross multiply
    28,748.90x = 39,671.70 × 16,811.52
  4. Step 4: Simplify right side
    28,748.90x = 666,941,577.98
  5. Step 5: Solve for x
    x = 666,941,577.98/28,748.90
  6. Step 6: Final answer
    x = 23,198.86

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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.