Home / 13,055.13-18,013.46-8,276.94

Finding the Fourth Proportional to 13,055.13, 18,013.46 and 8,276.94

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Solution

The fourth proportional to 13,055.13, 18,013.46 and 8,276.94 is: 11,420.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,055.13 : 18,013.46 = 8,276.94 : x
  2. Step 2: Convert to fraction form
    13,055.13/18,013.46 = 8,276.94/x
  3. Step 3: Cross multiply
    13,055.13x = 18,013.46 × 8,276.94
  4. Step 4: Simplify right side
    13,055.13x = 149,096,286.23
  5. Step 5: Solve for x
    x = 149,096,286.23/13,055.13
  6. Step 6: Final answer
    x = 11,420.51

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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.