Home / 13,228.38-18,255.50-7,485.37

Finding the Fourth Proportional to 13,228.38, 18,255.50 and 7,485.37

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Solution

The fourth proportional to 13,228.38, 18,255.50 and 7,485.37 is: 10,330.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.38 : 18,255.50 = 7,485.37 : x
  2. Step 2: Convert to fraction form
    13,228.38/18,255.50 = 7,485.37/x
  3. Step 3: Cross multiply
    13,228.38x = 18,255.50 × 7,485.37
  4. Step 4: Simplify right side
    13,228.38x = 136,649,172.04
  5. Step 5: Solve for x
    x = 136,649,172.04/13,228.38
  6. Step 6: Final answer
    x = 10,330.00

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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.