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Finding the Fourth Proportional to 17,876.21, 24,668.79 and 9,918.26

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Solution

The fourth proportional to 17,876.21, 24,668.79 and 9,918.26 is: 13,686.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,876.21 : 24,668.79 = 9,918.26 : x
  2. Step 2: Convert to fraction form
    17,876.21/24,668.79 = 9,918.26/x
  3. Step 3: Cross multiply
    17,876.21x = 24,668.79 × 9,918.26
  4. Step 4: Simplify right side
    17,876.21x = 244,671,405.08
  5. Step 5: Solve for x
    x = 244,671,405.08/17,876.21
  6. Step 6: Final answer
    x = 13,686.99

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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.