Home / 13,707.62-20,519.51-8,782.01

Finding the Fourth Proportional to 13,707.62, 20,519.51 and 8,782.01

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Solution

The fourth proportional to 13,707.62, 20,519.51 and 8,782.01 is: 13,146.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.62 : 20,519.51 = 8,782.01 : x
  2. Step 2: Convert to fraction form
    13,707.62/20,519.51 = 8,782.01/x
  3. Step 3: Cross multiply
    13,707.62x = 20,519.51 × 8,782.01
  4. Step 4: Simplify right side
    13,707.62x = 180,202,395.51
  5. Step 5: Solve for x
    x = 180,202,395.51/13,707.62
  6. Step 6: Final answer
    x = 13,146.15

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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.