Home / 21,794.48-30,074.92-12,840.24

Finding the Fourth Proportional to 21,794.48, 30,074.92 and 12,840.24

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Solution

The fourth proportional to 21,794.48, 30,074.92 and 12,840.24 is: 17,718.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,794.48 : 30,074.92 = 12,840.24 : x
  2. Step 2: Convert to fraction form
    21,794.48/30,074.92 = 12,840.24/x
  3. Step 3: Cross multiply
    21,794.48x = 30,074.92 × 12,840.24
  4. Step 4: Simplify right side
    21,794.48x = 386,169,190.78
  5. Step 5: Solve for x
    x = 386,169,190.78/21,794.48
  6. Step 6: Final answer
    x = 17,718.67

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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.