Home / 21,029.44-28,971.12-17,430.88

Finding the Fourth Proportional to 21,029.44, 28,971.12 and 17,430.88

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Solution

The fourth proportional to 21,029.44, 28,971.12 and 17,430.88 is: 24,013.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,029.44 : 28,971.12 = 17,430.88 : x
  2. Step 2: Convert to fraction form
    21,029.44/28,971.12 = 17,430.88/x
  3. Step 3: Cross multiply
    21,029.44x = 28,971.12 × 17,430.88
  4. Step 4: Simplify right side
    21,029.44x = 504,992,116.19
  5. Step 5: Solve for x
    x = 504,992,116.19/21,029.44
  6. Step 6: Final answer
    x = 24,013.58

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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.