Home / 19,378.50-26,738.19-11,417.82

Finding the Fourth Proportional to 19,378.50, 26,738.19 and 11,417.82

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Solution

The fourth proportional to 19,378.50, 26,738.19 and 11,417.82 is: 15,754.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,378.50 : 26,738.19 = 11,417.82 : x
  2. Step 2: Convert to fraction form
    19,378.50/26,738.19 = 11,417.82/x
  3. Step 3: Cross multiply
    19,378.50x = 26,738.19 × 11,417.82
  4. Step 4: Simplify right side
    19,378.50x = 305,291,840.55
  5. Step 5: Solve for x
    x = 305,291,840.55/19,378.50
  6. Step 6: Final answer
    x = 15,754.15

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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.