Home / 20,963.79-28,929.36-11,532.33

Finding the Fourth Proportional to 20,963.79, 28,929.36 and 11,532.33

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Solution

The fourth proportional to 20,963.79, 28,929.36 and 11,532.33 is: 15,914.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.79 : 28,929.36 = 11,532.33 : x
  2. Step 2: Convert to fraction form
    20,963.79/28,929.36 = 11,532.33/x
  3. Step 3: Cross multiply
    20,963.79x = 28,929.36 × 11,532.33
  4. Step 4: Simplify right side
    20,963.79x = 333,622,926.21
  5. Step 5: Solve for x
    x = 333,622,926.21/20,963.79
  6. Step 6: Final answer
    x = 15,914.25

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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.