Home / 19,311.00-28,970.56-6,661.90

Finding the Fourth Proportional to 19,311.00, 28,970.56 and 6,661.90

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Solution

The fourth proportional to 19,311.00, 28,970.56 and 6,661.90 is: 9,994.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,311.00 : 28,970.56 = 6,661.90 : x
  2. Step 2: Convert to fraction form
    19,311.00/28,970.56 = 6,661.90/x
  3. Step 3: Cross multiply
    19,311.00x = 28,970.56 × 6,661.90
  4. Step 4: Simplify right side
    19,311.00x = 192,999,018.20
  5. Step 5: Solve for x
    x = 192,999,018.20/19,311.00
  6. Step 6: Final answer
    x = 9,994.25

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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.