Home / 20,963.63-28,929.75-11,532.13

Finding the Fourth Proportional to 20,963.63, 28,929.75 and 11,532.13

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Solution

The fourth proportional to 20,963.63, 28,929.75 and 11,532.13 is: 15,914.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.63 : 28,929.75 = 11,532.13 : x
  2. Step 2: Convert to fraction form
    20,963.63/28,929.75 = 11,532.13/x
  3. Step 3: Cross multiply
    20,963.63x = 28,929.75 × 11,532.13
  4. Step 4: Simplify right side
    20,963.63x = 333,621,637.87
  5. Step 5: Solve for x
    x = 333,621,637.87/20,963.63
  6. Step 6: Final answer
    x = 15,914.31

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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.