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Finding the Fourth Proportional to 19,509.93, 26,922.00 and 11,445.21

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Solution

The fourth proportional to 19,509.93, 26,922.00 and 11,445.21 is: 15,793.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,509.93 : 26,922.00 = 11,445.21 : x
  2. Step 2: Convert to fraction form
    19,509.93/26,922.00 = 11,445.21/x
  3. Step 3: Cross multiply
    19,509.93x = 26,922.00 × 11,445.21
  4. Step 4: Simplify right side
    19,509.93x = 308,127,986.54
  5. Step 5: Solve for x
    x = 308,127,986.54/19,509.93
  6. Step 6: Final answer
    x = 15,793.39

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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.