Home / 21,004.75-28,986.65-11,573.11

Finding the Fourth Proportional to 21,004.75, 28,986.65 and 11,573.11

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Solution

The fourth proportional to 21,004.75, 28,986.65 and 11,573.11 is: 15,970.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.75 : 28,986.65 = 11,573.11 : x
  2. Step 2: Convert to fraction form
    21,004.75/28,986.65 = 11,573.11/x
  3. Step 3: Cross multiply
    21,004.75x = 28,986.65 × 11,573.11
  4. Step 4: Simplify right side
    21,004.75x = 335,465,688.98
  5. Step 5: Solve for x
    x = 335,465,688.98/21,004.75
  6. Step 6: Final answer
    x = 15,970.94

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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.