Home / 11,678.34-16,116.56-6,643.02

Finding the Fourth Proportional to 11,678.34, 16,116.56 and 6,643.02

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Solution

The fourth proportional to 11,678.34, 16,116.56 and 6,643.02 is: 9,167.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,678.34 : 16,116.56 = 6,643.02 : x
  2. Step 2: Convert to fraction form
    11,678.34/16,116.56 = 6,643.02/x
  3. Step 3: Cross multiply
    11,678.34x = 16,116.56 × 6,643.02
  4. Step 4: Simplify right side
    11,678.34x = 107,062,682.54
  5. Step 5: Solve for x
    x = 107,062,682.54/11,678.34
  6. Step 6: Final answer
    x = 9,167.63

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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.