Home / 13,994.37-20,979-12,776.94

Finding the Fourth Proportional to 13,994.37, 20,979 and 12,776.94

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Solution

The fourth proportional to 13,994.37, 20,979 and 12,776.94 is: 19,153.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,994.37 : 20,979 = 12,776.94 : x
  2. Step 2: Convert to fraction form
    13,994.37/20,979 = 12,776.94/x
  3. Step 3: Cross multiply
    13,994.37x = 20,979 × 12,776.94
  4. Step 4: Simplify right side
    13,994.37x = 268,047,424.26
  5. Step 5: Solve for x
    x = 268,047,424.26/13,994.37
  6. Step 6: Final answer
    x = 19,153.95

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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.