Home / 22,280.45-30,728.81-15,895.77

Finding the Fourth Proportional to 22,280.45, 30,728.81 and 15,895.77

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Solution

The fourth proportional to 22,280.45, 30,728.81 and 15,895.77 is: 21,923.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,280.45 : 30,728.81 = 15,895.77 : x
  2. Step 2: Convert to fraction form
    22,280.45/30,728.81 = 15,895.77/x
  3. Step 3: Cross multiply
    22,280.45x = 30,728.81 × 15,895.77
  4. Step 4: Simplify right side
    22,280.45x = 488,458,016.65
  5. Step 5: Solve for x
    x = 488,458,016.65/22,280.45
  6. Step 6: Final answer
    x = 21,923.17

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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.