Home / 13,555.28-18,704.04-7,967.36

Finding the Fourth Proportional to 13,555.28, 18,704.04 and 7,967.36

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Solution

The fourth proportional to 13,555.28, 18,704.04 and 7,967.36 is: 10,993.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.28 : 18,704.04 = 7,967.36 : x
  2. Step 2: Convert to fraction form
    13,555.28/18,704.04 = 7,967.36/x
  3. Step 3: Cross multiply
    13,555.28x = 18,704.04 × 7,967.36
  4. Step 4: Simplify right side
    13,555.28x = 149,021,820.13
  5. Step 5: Solve for x
    x = 149,021,820.13/13,555.28
  6. Step 6: Final answer
    x = 10,993.64

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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.