Home / 21,259.71-29,339.55-11,828.48

Finding the Fourth Proportional to 21,259.71, 29,339.55 and 11,828.48

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Solution

The fourth proportional to 21,259.71, 29,339.55 and 11,828.48 is: 16,323.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,259.71 : 29,339.55 = 11,828.48 : x
  2. Step 2: Convert to fraction form
    21,259.71/29,339.55 = 11,828.48/x
  3. Step 3: Cross multiply
    21,259.71x = 29,339.55 × 11,828.48
  4. Step 4: Simplify right side
    21,259.71x = 347,042,133.69
  5. Step 5: Solve for x
    x = 347,042,133.69/21,259.71
  6. Step 6: Final answer
    x = 16,323.94

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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.