Home / 13,387.53-18,474.93-7,419.27

Finding the Fourth Proportional to 13,387.53, 18,474.93 and 7,419.27

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Solution

The fourth proportional to 13,387.53, 18,474.93 and 7,419.27 is: 10,238.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.53 : 18,474.93 = 7,419.27 : x
  2. Step 2: Convert to fraction form
    13,387.53/18,474.93 = 7,419.27/x
  3. Step 3: Cross multiply
    13,387.53x = 18,474.93 × 7,419.27
  4. Step 4: Simplify right side
    13,387.53x = 137,070,493.90
  5. Step 5: Solve for x
    x = 137,070,493.90/13,387.53
  6. Step 6: Final answer
    x = 10,238.67

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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.