Home / 21,361.43-29,473.77-12,403.53

Finding the Fourth Proportional to 21,361.43, 29,473.77 and 12,403.53

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Solution

The fourth proportional to 21,361.43, 29,473.77 and 12,403.53 is: 17,113.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,361.43 : 29,473.77 = 12,403.53 : x
  2. Step 2: Convert to fraction form
    21,361.43/29,473.77 = 12,403.53/x
  3. Step 3: Cross multiply
    21,361.43x = 29,473.77 × 12,403.53
  4. Step 4: Simplify right side
    21,361.43x = 365,578,790.41
  5. Step 5: Solve for x
    x = 365,578,790.41/21,361.43
  6. Step 6: Final answer
    x = 17,113.97

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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.