Home / 21,089.03-29,101.73-11,657.03

Finding the Fourth Proportional to 21,089.03, 29,101.73 and 11,657.03

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Solution

The fourth proportional to 21,089.03, 29,101.73 and 11,657.03 is: 16,086.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.03 : 29,101.73 = 11,657.03 : x
  2. Step 2: Convert to fraction form
    21,089.03/29,101.73 = 11,657.03/x
  3. Step 3: Cross multiply
    21,089.03x = 29,101.73 × 11,657.03
  4. Step 4: Simplify right side
    21,089.03x = 339,239,681.38
  5. Step 5: Solve for x
    x = 339,239,681.38/21,089.03
  6. Step 6: Final answer
    x = 16,086.07

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Half scale
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Double scale
Find fourth proportional to 21,090.03, 29,103.10 and 11,658.03
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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.