Home / 21,400.74-29,533.28-11,969.37

Finding the Fourth Proportional to 21,400.74, 29,533.28 and 11,969.37

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Solution

The fourth proportional to 21,400.74, 29,533.28 and 11,969.37 is: 16,517.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,400.74 : 29,533.28 = 11,969.37 : x
  2. Step 2: Convert to fraction form
    21,400.74/29,533.28 = 11,969.37/x
  3. Step 3: Cross multiply
    21,400.74x = 29,533.28 × 11,969.37
  4. Step 4: Simplify right side
    21,400.74x = 353,494,695.79
  5. Step 5: Solve for x
    x = 353,494,695.79/21,400.74
  6. Step 6: Final answer
    x = 16,517.87

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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.