Home / 13,443.14-20,164.64-5,121.20

Finding the Fourth Proportional to 13,443.14, 20,164.64 and 5,121.20

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Solution

The fourth proportional to 13,443.14, 20,164.64 and 5,121.20 is: 7,681.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,443.14 : 20,164.64 = 5,121.20 : x
  2. Step 2: Convert to fraction form
    13,443.14/20,164.64 = 5,121.20/x
  3. Step 3: Cross multiply
    13,443.14x = 20,164.64 × 5,121.20
  4. Step 4: Simplify right side
    13,443.14x = 103,267,154.37
  5. Step 5: Solve for x
    x = 103,267,154.37/13,443.14
  6. Step 6: Final answer
    x = 7,681.77

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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.