Home / 12,861.64-19,176.91-11,763.28

Finding the Fourth Proportional to 12,861.64, 19,176.91 and 11,763.28

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Solution

The fourth proportional to 12,861.64, 19,176.91 and 11,763.28 is: 17,539.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,861.64 : 19,176.91 = 11,763.28 : x
  2. Step 2: Convert to fraction form
    12,861.64/19,176.91 = 11,763.28/x
  3. Step 3: Cross multiply
    12,861.64x = 19,176.91 × 11,763.28
  4. Step 4: Simplify right side
    12,861.64x = 225,583,391.27
  5. Step 5: Solve for x
    x = 225,583,391.27/12,861.64
  6. Step 6: Final answer
    x = 17,539.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.