Home / 21,004.63-28,986.27-11,445.09

Finding the Fourth Proportional to 21,004.63, 28,986.27 and 11,445.09

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Solution

The fourth proportional to 21,004.63, 28,986.27 and 11,445.09 is: 15,794.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.63 : 28,986.27 = 11,445.09 : x
  2. Step 2: Convert to fraction form
    21,004.63/28,986.27 = 11,445.09/x
  3. Step 3: Cross multiply
    21,004.63x = 28,986.27 × 11,445.09
  4. Step 4: Simplify right side
    21,004.63x = 331,750,468.91
  5. Step 5: Solve for x
    x = 331,750,468.91/21,004.63
  6. Step 6: Final answer
    x = 15,794.16

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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.