Home / 21,126.76-31,676.77-17,994.49

Finding the Fourth Proportional to 21,126.76, 31,676.77 and 17,994.49

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Solution

The fourth proportional to 21,126.76, 31,676.77 and 17,994.49 is: 26,980.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,126.76 : 31,676.77 = 17,994.49 : x
  2. Step 2: Convert to fraction form
    21,126.76/31,676.77 = 17,994.49/x
  3. Step 3: Cross multiply
    21,126.76x = 31,676.77 × 17,994.49
  4. Step 4: Simplify right side
    21,126.76x = 570,007,321.00
  5. Step 5: Solve for x
    x = 570,007,321.00/21,126.76
  6. Step 6: Final answer
    x = 26,980.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.