Home / 13,579.98-20,356.02-7,724.22

Finding the Fourth Proportional to 13,579.98, 20,356.02 and 7,724.22

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Solution

The fourth proportional to 13,579.98, 20,356.02 and 7,724.22 is: 11,578.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.98 : 20,356.02 = 7,724.22 : x
  2. Step 2: Convert to fraction form
    13,579.98/20,356.02 = 7,724.22/x
  3. Step 3: Cross multiply
    13,579.98x = 20,356.02 × 7,724.22
  4. Step 4: Simplify right side
    13,579.98x = 157,234,376.80
  5. Step 5: Solve for x
    x = 157,234,376.80/13,579.98
  6. Step 6: Final answer
    x = 11,578.40

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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.