Home / 12,821.84-19,232.88-4,056.80

Finding the Fourth Proportional to 12,821.84, 19,232.88 and 4,056.80

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Solution

The fourth proportional to 12,821.84, 19,232.88 and 4,056.80 is: 6,085.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.84 : 19,232.88 = 4,056.80 : x
  2. Step 2: Convert to fraction form
    12,821.84/19,232.88 = 4,056.80/x
  3. Step 3: Cross multiply
    12,821.84x = 19,232.88 × 4,056.80
  4. Step 4: Simplify right side
    12,821.84x = 78,023,947.58
  5. Step 5: Solve for x
    x = 78,023,947.58/12,821.84
  6. Step 6: Final answer
    x = 6,085.24

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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.