Home / 13,786.81-20,686.12-5,891.06

Finding the Fourth Proportional to 13,786.81, 20,686.12 and 5,891.06

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Solution

The fourth proportional to 13,786.81, 20,686.12 and 5,891.06 is: 8,839.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,786.81 : 20,686.12 = 5,891.06 : x
  2. Step 2: Convert to fraction form
    13,786.81/20,686.12 = 5,891.06/x
  3. Step 3: Cross multiply
    13,786.81x = 20,686.12 × 5,891.06
  4. Step 4: Simplify right side
    13,786.81x = 121,863,155.01
  5. Step 5: Solve for x
    x = 121,863,155.01/13,786.81
  6. Step 6: Final answer
    x = 8,839.11

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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.