Home / 20,626.36-28,464.45-12,668.56

Finding the Fourth Proportional to 20,626.36, 28,464.45 and 12,668.56

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Solution

The fourth proportional to 20,626.36, 28,464.45 and 12,668.56 is: 17,482.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,626.36 : 28,464.45 = 12,668.56 : x
  2. Step 2: Convert to fraction form
    20,626.36/28,464.45 = 12,668.56/x
  3. Step 3: Cross multiply
    20,626.36x = 28,464.45 × 12,668.56
  4. Step 4: Simplify right side
    20,626.36x = 360,603,592.69
  5. Step 5: Solve for x
    x = 360,603,592.69/20,626.36
  6. Step 6: Final answer
    x = 17,482.66

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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.