Home / 21,400.75-29,532.48-11,840.99

Finding the Fourth Proportional to 21,400.75, 29,532.48 and 11,840.99

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Solution

The fourth proportional to 21,400.75, 29,532.48 and 11,840.99 is: 16,340.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,400.75 : 29,532.48 = 11,840.99 : x
  2. Step 2: Convert to fraction form
    21,400.75/29,532.48 = 11,840.99/x
  3. Step 3: Cross multiply
    21,400.75x = 29,532.48 × 11,840.99
  4. Step 4: Simplify right side
    21,400.75x = 349,693,800.36
  5. Step 5: Solve for x
    x = 349,693,800.36/21,400.75
  6. Step 6: Final answer
    x = 16,340.26

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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.