Home / 28,122.93-38,803.32-16,790.36

Finding the Fourth Proportional to 28,122.93, 38,803.32 and 16,790.36

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Solution

The fourth proportional to 28,122.93, 38,803.32 and 16,790.36 is: 23,166.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,122.93 : 38,803.32 = 16,790.36 : x
  2. Step 2: Convert to fraction form
    28,122.93/38,803.32 = 16,790.36/x
  3. Step 3: Cross multiply
    28,122.93x = 38,803.32 × 16,790.36
  4. Step 4: Simplify right side
    28,122.93x = 651,521,517.98
  5. Step 5: Solve for x
    x = 651,521,517.98/28,122.93
  6. Step 6: Final answer
    x = 23,166.91

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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.