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Finding the Fourth Proportional to 15,297.90, 21,111.42 and 8,584.01

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Solution

The fourth proportional to 15,297.90, 21,111.42 and 8,584.01 is: 11,846.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,297.90 : 21,111.42 = 8,584.01 : x
  2. Step 2: Convert to fraction form
    15,297.90/21,111.42 = 8,584.01/x
  3. Step 3: Cross multiply
    15,297.90x = 21,111.42 × 8,584.01
  4. Step 4: Simplify right side
    15,297.90x = 181,220,640.39
  5. Step 5: Solve for x
    x = 181,220,640.39/15,297.90
  6. Step 6: Final answer
    x = 11,846.11

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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.