Home / 13,438.37-20,186.72-11,362.55

Finding the Fourth Proportional to 13,438.37, 20,186.72 and 11,362.55

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Solution

The fourth proportional to 13,438.37, 20,186.72 and 11,362.55 is: 17,068.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.37 : 20,186.72 = 11,362.55 : x
  2. Step 2: Convert to fraction form
    13,438.37/20,186.72 = 11,362.55/x
  3. Step 3: Cross multiply
    13,438.37x = 20,186.72 × 11,362.55
  4. Step 4: Simplify right side
    13,438.37x = 229,372,500.20
  5. Step 5: Solve for x
    x = 229,372,500.20/13,438.37
  6. Step 6: Final answer
    x = 17,068.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.