Home / 28,749.18-39,671.72-16,171.50

Finding the Fourth Proportional to 28,749.18, 39,671.72 and 16,171.50

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Solution

The fourth proportional to 28,749.18, 39,671.72 and 16,171.50 is: 22,315.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,749.18 : 39,671.72 = 16,171.50 : x
  2. Step 2: Convert to fraction form
    28,749.18/39,671.72 = 16,171.50/x
  3. Step 3: Cross multiply
    28,749.18x = 39,671.72 × 16,171.50
  4. Step 4: Simplify right side
    28,749.18x = 641,551,219.98
  5. Step 5: Solve for x
    x = 641,551,219.98/28,749.18
  6. Step 6: Final answer
    x = 22,315.46

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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.