Home / 21,004.99-28,985.54-11,573.55

Finding the Fourth Proportional to 21,004.99, 28,985.54 and 11,573.55

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Solution

The fourth proportional to 21,004.99, 28,985.54 and 11,573.55 is: 15,970.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.99 : 28,985.54 = 11,573.55 : x
  2. Step 2: Convert to fraction form
    21,004.99/28,985.54 = 11,573.55/x
  3. Step 3: Cross multiply
    21,004.99x = 28,985.54 × 11,573.55
  4. Step 4: Simplify right side
    21,004.99x = 335,465,451.54
  5. Step 5: Solve for x
    x = 335,465,451.54/21,004.99
  6. Step 6: Final answer
    x = 15,970.75

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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.