Home / 21,297.47-29,389.43-11,864.21

Finding the Fourth Proportional to 21,297.47, 29,389.43 and 11,864.21

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Solution

The fourth proportional to 21,297.47, 29,389.43 and 11,864.21 is: 16,372.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,297.47 : 29,389.43 = 11,864.21 : x
  2. Step 2: Convert to fraction form
    21,297.47/29,389.43 = 11,864.21/x
  3. Step 3: Cross multiply
    21,297.47x = 29,389.43 × 11,864.21
  4. Step 4: Simplify right side
    21,297.47x = 348,682,252.01
  5. Step 5: Solve for x
    x = 348,682,252.01/21,297.47
  6. Step 6: Final answer
    x = 16,372.01

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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.