Home / 18,386.28-25,362.36-13,344.64

Finding the Fourth Proportional to 18,386.28, 25,362.36 and 13,344.64

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Solution

The fourth proportional to 18,386.28, 25,362.36 and 13,344.64 is: 18,407.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,386.28 : 25,362.36 = 13,344.64 : x
  2. Step 2: Convert to fraction form
    18,386.28/25,362.36 = 13,344.64/x
  3. Step 3: Cross multiply
    18,386.28x = 25,362.36 × 13,344.64
  4. Step 4: Simplify right side
    18,386.28x = 338,451,563.75
  5. Step 5: Solve for x
    x = 338,451,563.75/18,386.28
  6. Step 6: Final answer
    x = 18,407.83

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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.