Home / 13,500.08-18,619.56-11,989.16

Finding the Fourth Proportional to 13,500.08, 18,619.56 and 11,989.16

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Solution

The fourth proportional to 13,500.08, 18,619.56 and 11,989.16 is: 16,535.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,500.08 : 18,619.56 = 11,989.16 : x
  2. Step 2: Convert to fraction form
    13,500.08/18,619.56 = 11,989.16/x
  3. Step 3: Cross multiply
    13,500.08x = 18,619.56 × 11,989.16
  4. Step 4: Simplify right side
    13,500.08x = 223,232,883.97
  5. Step 5: Solve for x
    x = 223,232,883.97/13,500.08
  6. Step 6: Final answer
    x = 16,535.67

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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.