Home / 13,395.03-18,485.58-8,088.78

Finding the Fourth Proportional to 13,395.03, 18,485.58 and 8,088.78

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Solution

The fourth proportional to 13,395.03, 18,485.58 and 8,088.78 is: 11,162.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.03 : 18,485.58 = 8,088.78 : x
  2. Step 2: Convert to fraction form
    13,395.03/18,485.58 = 8,088.78/x
  3. Step 3: Cross multiply
    13,395.03x = 18,485.58 × 8,088.78
  4. Step 4: Simplify right side
    13,395.03x = 149,525,789.79
  5. Step 5: Solve for x
    x = 149,525,789.79/13,395.03
  6. Step 6: Final answer
    x = 11,162.78

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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.