Home / 19,211.02-28,816.56-12,666.44

Finding the Fourth Proportional to 19,211.02, 28,816.56 and 12,666.44

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Solution

The fourth proportional to 19,211.02, 28,816.56 and 12,666.44 is: 18,999.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,211.02 : 28,816.56 = 12,666.44 : x
  2. Step 2: Convert to fraction form
    19,211.02/28,816.56 = 12,666.44/x
  3. Step 3: Cross multiply
    19,211.02x = 28,816.56 × 12,666.44
  4. Step 4: Simplify right side
    19,211.02x = 365,003,228.25
  5. Step 5: Solve for x
    x = 365,003,228.25/19,211.02
  6. Step 6: Final answer
    x = 18,999.68

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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.