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Finding the Fourth Proportional to 11,718.58, 17,570.05 and 6,456.11

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Solution

The fourth proportional to 11,718.58, 17,570.05 and 6,456.11 is: 9,679.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,718.58 : 17,570.05 = 6,456.11 : x
  2. Step 2: Convert to fraction form
    11,718.58/17,570.05 = 6,456.11/x
  3. Step 3: Cross multiply
    11,718.58x = 17,570.05 × 6,456.11
  4. Step 4: Simplify right side
    11,718.58x = 113,434,203.29
  5. Step 5: Solve for x
    x = 113,434,203.29/11,718.58
  6. Step 6: Final answer
    x = 9,679.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.