Home / 21,004.68-28,987.16-11,573.45

Finding the Fourth Proportional to 21,004.68, 28,987.16 and 11,573.45

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Solution

The fourth proportional to 21,004.68, 28,987.16 and 11,573.45 is: 15,971.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.68 : 28,987.16 = 11,573.45 : x
  2. Step 2: Convert to fraction form
    21,004.68/28,987.16 = 11,573.45/x
  3. Step 3: Cross multiply
    21,004.68x = 28,987.16 × 11,573.45
  4. Step 4: Simplify right side
    21,004.68x = 335,481,244.10
  5. Step 5: Solve for x
    x = 335,481,244.10/21,004.68
  6. Step 6: Final answer
    x = 15,971.74

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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.