Home / 28,760.45-39,689.34-16,185.20

Finding the Fourth Proportional to 28,760.45, 39,689.34 and 16,185.20

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Solution

The fourth proportional to 28,760.45, 39,689.34 and 16,185.20 is: 22,335.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,760.45 : 39,689.34 = 16,185.20 : x
  2. Step 2: Convert to fraction form
    28,760.45/39,689.34 = 16,185.20/x
  3. Step 3: Cross multiply
    28,760.45x = 39,689.34 × 16,185.20
  4. Step 4: Simplify right side
    28,760.45x = 642,379,905.77
  5. Step 5: Solve for x
    x = 642,379,905.77/28,760.45
  6. Step 6: Final answer
    x = 22,335.53

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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.