Home / 13,106.81-19,660.66-5,210.80

Finding the Fourth Proportional to 13,106.81, 19,660.66 and 5,210.80

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Solution

The fourth proportional to 13,106.81, 19,660.66 and 5,210.80 is: 7,816.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,106.81 : 19,660.66 = 5,210.80 : x
  2. Step 2: Convert to fraction form
    13,106.81/19,660.66 = 5,210.80/x
  3. Step 3: Cross multiply
    13,106.81x = 19,660.66 × 5,210.80
  4. Step 4: Simplify right side
    13,106.81x = 102,447,704.95
  5. Step 5: Solve for x
    x = 102,447,704.95/13,106.81
  6. Step 6: Final answer
    x = 7,816.37

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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.