Home / 21,004.86-31,512.65-6,968.80

Finding the Fourth Proportional to 21,004.86, 31,512.65 and 6,968.80

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Solution

The fourth proportional to 21,004.86, 31,512.65 and 6,968.80 is: 10,454.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.86 : 31,512.65 = 6,968.80 : x
  2. Step 2: Convert to fraction form
    21,004.86/31,512.65 = 6,968.80/x
  3. Step 3: Cross multiply
    21,004.86x = 31,512.65 × 6,968.80
  4. Step 4: Simplify right side
    21,004.86x = 219,605,355.32
  5. Step 5: Solve for x
    x = 219,605,355.32/21,004.86
  6. Step 6: Final answer
    x = 10,454.98

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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.