Home / 21,748.87-30,012.93-12,796.95

Finding the Fourth Proportional to 21,748.87, 30,012.93 and 12,796.95

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Solution

The fourth proportional to 21,748.87, 30,012.93 and 12,796.95 is: 17,659.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,748.87 : 30,012.93 = 12,796.95 : x
  2. Step 2: Convert to fraction form
    21,748.87/30,012.93 = 12,796.95/x
  3. Step 3: Cross multiply
    21,748.87x = 30,012.93 × 12,796.95
  4. Step 4: Simplify right side
    21,748.87x = 384,073,964.56
  5. Step 5: Solve for x
    x = 384,073,964.56/21,748.87
  6. Step 6: Final answer
    x = 17,659.49

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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.