Home / 21,128.98-29,126.93-16,084.41

Finding the Fourth Proportional to 21,128.98, 29,126.93 and 16,084.41

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Solution

The fourth proportional to 21,128.98, 29,126.93 and 16,084.41 is: 22,172.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,128.98 : 29,126.93 = 16,084.41 : x
  2. Step 2: Convert to fraction form
    21,128.98/29,126.93 = 16,084.41/x
  3. Step 3: Cross multiply
    21,128.98x = 29,126.93 × 16,084.41
  4. Step 4: Simplify right side
    21,128.98x = 468,489,403.74
  5. Step 5: Solve for x
    x = 468,489,403.74/21,128.98
  6. Step 6: Final answer
    x = 22,172.84

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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.