Home / 21,018.67-29,004.06-11,587.30

Finding the Fourth Proportional to 21,018.67, 29,004.06 and 11,587.30

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Solution

The fourth proportional to 21,018.67, 29,004.06 and 11,587.30 is: 15,989.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.67 : 29,004.06 = 11,587.30 : x
  2. Step 2: Convert to fraction form
    21,018.67/29,004.06 = 11,587.30/x
  3. Step 3: Cross multiply
    21,018.67x = 29,004.06 × 11,587.30
  4. Step 4: Simplify right side
    21,018.67x = 336,078,744.44
  5. Step 5: Solve for x
    x = 336,078,744.44/21,018.67
  6. Step 6: Final answer
    x = 15,989.53

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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.