Home / 21,238.67-29,297.26-13,168.64

Finding the Fourth Proportional to 21,238.67, 29,297.26 and 13,168.64

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Solution

The fourth proportional to 21,238.67, 29,297.26 and 13,168.64 is: 18,165.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,238.67 : 29,297.26 = 13,168.64 : x
  2. Step 2: Convert to fraction form
    21,238.67/29,297.26 = 13,168.64/x
  3. Step 3: Cross multiply
    21,238.67x = 29,297.26 × 13,168.64
  4. Step 4: Simplify right side
    21,238.67x = 385,805,159.63
  5. Step 5: Solve for x
    x = 385,805,159.63/21,238.67
  6. Step 6: Final answer
    x = 18,165.22

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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.