Home / 20,927.16-28,879.74-11,975.45

Finding the Fourth Proportional to 20,927.16, 28,879.74 and 11,975.45

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Solution

The fourth proportional to 20,927.16, 28,879.74 and 11,975.45 is: 16,526.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.16 : 28,879.74 = 11,975.45 : x
  2. Step 2: Convert to fraction form
    20,927.16/28,879.74 = 11,975.45/x
  3. Step 3: Cross multiply
    20,927.16x = 28,879.74 × 11,975.45
  4. Step 4: Simplify right side
    20,927.16x = 345,847,737.98
  5. Step 5: Solve for x
    x = 345,847,737.98/20,927.16
  6. Step 6: Final answer
    x = 16,526.26

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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.