Home / 21,069.46-29,074.65-12,581.16

Finding the Fourth Proportional to 21,069.46, 29,074.65 and 12,581.16

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Solution

The fourth proportional to 21,069.46, 29,074.65 and 12,581.16 is: 17,361.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.46 : 29,074.65 = 12,581.16 : x
  2. Step 2: Convert to fraction form
    21,069.46/29,074.65 = 12,581.16/x
  3. Step 3: Cross multiply
    21,069.46x = 29,074.65 × 12,581.16
  4. Step 4: Simplify right side
    21,069.46x = 365,792,823.59
  5. Step 5: Solve for x
    x = 365,792,823.59/21,069.46
  6. Step 6: Final answer
    x = 17,361.28

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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.