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Finding the Fourth Proportional to 11,393.04, 15,720.82 and 6,356.68

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Solution

The fourth proportional to 11,393.04, 15,720.82 and 6,356.68 is: 8,771.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,393.04 : 15,720.82 = 6,356.68 : x
  2. Step 2: Convert to fraction form
    11,393.04/15,720.82 = 6,356.68/x
  3. Step 3: Cross multiply
    11,393.04x = 15,720.82 × 6,356.68
  4. Step 4: Simplify right side
    11,393.04x = 99,932,222.08
  5. Step 5: Solve for x
    x = 99,932,222.08/11,393.04
  6. Step 6: Final answer
    x = 8,771.34

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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.