Home / 13,928.34-20,868.20-11,603.28

Finding the Fourth Proportional to 13,928.34, 20,868.20 and 11,603.28

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Solution

The fourth proportional to 13,928.34, 20,868.20 and 11,603.28 is: 17,384.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.34 : 20,868.20 = 11,603.28 : x
  2. Step 2: Convert to fraction form
    13,928.34/20,868.20 = 11,603.28/x
  3. Step 3: Cross multiply
    13,928.34x = 20,868.20 × 11,603.28
  4. Step 4: Simplify right side
    13,928.34x = 242,139,567.70
  5. Step 5: Solve for x
    x = 242,139,567.70/13,928.34
  6. Step 6: Final answer
    x = 17,384.67

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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.