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Finding the Fourth Proportional to 17,663.88, 26,478.54 and 8,427.72

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Solution

The fourth proportional to 17,663.88, 26,478.54 and 8,427.72 is: 12,633.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,663.88 : 26,478.54 = 8,427.72 : x
  2. Step 2: Convert to fraction form
    17,663.88/26,478.54 = 8,427.72/x
  3. Step 3: Cross multiply
    17,663.88x = 26,478.54 × 8,427.72
  4. Step 4: Simplify right side
    17,663.88x = 223,153,721.13
  5. Step 5: Solve for x
    x = 223,153,721.13/17,663.88
  6. Step 6: Final answer
    x = 12,633.34

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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.