Home / 13,847.08-19,106.41-7,878.40

Finding the Fourth Proportional to 13,847.08, 19,106.41 and 7,878.40

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Solution

The fourth proportional to 13,847.08, 19,106.41 and 7,878.40 is: 10,870.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,847.08 : 19,106.41 = 7,878.40 : x
  2. Step 2: Convert to fraction form
    13,847.08/19,106.41 = 7,878.40/x
  3. Step 3: Cross multiply
    13,847.08x = 19,106.41 × 7,878.40
  4. Step 4: Simplify right side
    13,847.08x = 150,527,940.54
  5. Step 5: Solve for x
    x = 150,527,940.54/13,847.08
  6. Step 6: Final answer
    x = 10,870.74

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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.