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Finding the Fourth Proportional to 15,103.27, 20,842.08 and 8,643.07

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Solution

The fourth proportional to 15,103.27, 20,842.08 and 8,643.07 is: 11,927.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,103.27 : 20,842.08 = 8,643.07 : x
  2. Step 2: Convert to fraction form
    15,103.27/20,842.08 = 8,643.07/x
  3. Step 3: Cross multiply
    15,103.27x = 20,842.08 × 8,643.07
  4. Step 4: Simplify right side
    15,103.27x = 180,139,556.39
  5. Step 5: Solve for x
    x = 180,139,556.39/15,103.27
  6. Step 6: Final answer
    x = 11,927.19

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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.