Home / 30,787.67-42,466.75-21,227.96

Finding the Fourth Proportional to 30,787.67, 42,466.75 and 21,227.96

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Solution

The fourth proportional to 30,787.67, 42,466.75 and 21,227.96 is: 29,280.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,787.67 : 42,466.75 = 21,227.96 : x
  2. Step 2: Convert to fraction form
    30,787.67/42,466.75 = 21,227.96/x
  3. Step 3: Cross multiply
    30,787.67x = 42,466.75 × 21,227.96
  4. Step 4: Simplify right side
    30,787.67x = 901,482,470.33
  5. Step 5: Solve for x
    x = 901,482,470.33/30,787.67
  6. Step 6: Final answer
    x = 29,280.63

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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.