Home / 21,298.99-29,392.80-11,739.22

Finding the Fourth Proportional to 21,298.99, 29,392.80 and 11,739.22

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Solution

The fourth proportional to 21,298.99, 29,392.80 and 11,739.22 is: 16,200.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,298.99 : 29,392.80 = 11,739.22 : x
  2. Step 2: Convert to fraction form
    21,298.99/29,392.80 = 11,739.22/x
  3. Step 3: Cross multiply
    21,298.99x = 29,392.80 × 11,739.22
  4. Step 4: Simplify right side
    21,298.99x = 345,048,339.96
  5. Step 5: Solve for x
    x = 345,048,339.96/21,298.99
  6. Step 6: Final answer
    x = 16,200.22

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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.