Home / 13,356.19-18,439.94-8,578.06

Finding the Fourth Proportional to 13,356.19, 18,439.94 and 8,578.06

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Solution

The fourth proportional to 13,356.19, 18,439.94 and 8,578.06 is: 11,843.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.19 : 18,439.94 = 8,578.06 : x
  2. Step 2: Convert to fraction form
    13,356.19/18,439.94 = 8,578.06/x
  3. Step 3: Cross multiply
    13,356.19x = 18,439.94 × 8,578.06
  4. Step 4: Simplify right side
    13,356.19x = 158,178,946.31
  5. Step 5: Solve for x
    x = 158,178,946.31/13,356.19
  6. Step 6: Final answer
    x = 11,843.12

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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.