Home / 21,298.55-29,392.19-11,738.78

Finding the Fourth Proportional to 21,298.55, 29,392.19 and 11,738.78

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Solution

The fourth proportional to 21,298.55, 29,392.19 and 11,738.78 is: 16,199.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,298.55 : 29,392.19 = 11,738.78 : x
  2. Step 2: Convert to fraction form
    21,298.55/29,392.19 = 11,738.78/x
  3. Step 3: Cross multiply
    21,298.55x = 29,392.19 × 11,738.78
  4. Step 4: Simplify right side
    21,298.55x = 345,028,400.71
  5. Step 5: Solve for x
    x = 345,028,400.71/21,298.55
  6. Step 6: Final answer
    x = 16,199.62

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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.