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Finding the Fourth Proportional to 11,393, 15,722.34 and 6,425

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Solution

The fourth proportional to 11,393, 15,722.34 and 6,425 is: 8,866.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,393 : 15,722.34 = 6,425 : x
  2. Step 2: Convert to fraction form
    11,393/15,722.34 = 6,425/x
  3. Step 3: Cross multiply
    11,393x = 15,722.34 × 6,425
  4. Step 4: Simplify right side
    11,393x = 101,016,034.50
  5. Step 5: Solve for x
    x = 101,016,034.50/11,393
  6. Step 6: Final answer
    x = 8,866.50

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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.