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Finding the Fourth Proportional to 15,793.09, 21,794.47 and 8,719.56

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Solution

The fourth proportional to 15,793.09, 21,794.47 and 8,719.56 is: 12,033.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,793.09 : 21,794.47 = 8,719.56 : x
  2. Step 2: Convert to fraction form
    15,793.09/21,794.47 = 8,719.56/x
  3. Step 3: Cross multiply
    15,793.09x = 21,794.47 × 8,719.56
  4. Step 4: Simplify right side
    15,793.09x = 190,038,167.03
  5. Step 5: Solve for x
    x = 190,038,167.03/15,793.09
  6. Step 6: Final answer
    x = 12,033.00

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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.