Home / 28,440.94-42,628.19-21,398.33

Finding the Fourth Proportional to 28,440.94, 42,628.19 and 21,398.33

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Solution

The fourth proportional to 28,440.94, 42,628.19 and 21,398.33 is: 32,072.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.94 : 42,628.19 = 21,398.33 : x
  2. Step 2: Convert to fraction form
    28,440.94/42,628.19 = 21,398.33/x
  3. Step 3: Cross multiply
    28,440.94x = 42,628.19 × 21,398.33
  4. Step 4: Simplify right side
    28,440.94x = 912,171,837.03
  5. Step 5: Solve for x
    x = 912,171,837.03/28,440.94
  6. Step 6: Final answer
    x = 32,072.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.