Home / 13,021.98-19,532.49-3,787.74

Finding the Fourth Proportional to 13,021.98, 19,532.49 and 3,787.74

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Solution

The fourth proportional to 13,021.98, 19,532.49 and 3,787.74 is: 5,681.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.98 : 19,532.49 = 3,787.74 : x
  2. Step 2: Convert to fraction form
    13,021.98/19,532.49 = 3,787.74/x
  3. Step 3: Cross multiply
    13,021.98x = 19,532.49 × 3,787.74
  4. Step 4: Simplify right side
    13,021.98x = 73,983,993.67
  5. Step 5: Solve for x
    x = 73,983,993.67/13,021.98
  6. Step 6: Final answer
    x = 5,681.47

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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.