Home / 28,544.41-39,428.94-21,912.00

Finding the Fourth Proportional to 28,544.41, 39,428.94 and 21,912.00

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Solution

The fourth proportional to 28,544.41, 39,428.94 and 21,912.00 is: 30,267.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,544.41 : 39,428.94 = 21,912.00 : x
  2. Step 2: Convert to fraction form
    28,544.41/39,428.94 = 21,912.00/x
  3. Step 3: Cross multiply
    28,544.41x = 39,428.94 × 21,912.00
  4. Step 4: Simplify right side
    28,544.41x = 863,966,626.58
  5. Step 5: Solve for x
    x = 863,966,626.58/28,544.41
  6. Step 6: Final answer
    x = 30,267.45

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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.