Home / 14,039.75-21,041.94-12,280.57

Finding the Fourth Proportional to 14,039.75, 21,041.94 and 12,280.57

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Solution

The fourth proportional to 14,039.75, 21,041.94 and 12,280.57 is: 18,405.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,039.75 : 21,041.94 = 12,280.57 : x
  2. Step 2: Convert to fraction form
    14,039.75/21,041.94 = 12,280.57/x
  3. Step 3: Cross multiply
    14,039.75x = 21,041.94 × 12,280.57
  4. Step 4: Simplify right side
    14,039.75x = 258,407,010.55
  5. Step 5: Solve for x
    x = 258,407,010.55/14,039.75
  6. Step 6: Final answer
    x = 18,405.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.