Home / 12,895.68-19,343.98-4,129.45

Finding the Fourth Proportional to 12,895.68, 19,343.98 and 4,129.45

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Solution

The fourth proportional to 12,895.68, 19,343.98 and 4,129.45 is: 6,194.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,895.68 : 19,343.98 = 4,129.45 : x
  2. Step 2: Convert to fraction form
    12,895.68/19,343.98 = 4,129.45/x
  3. Step 3: Cross multiply
    12,895.68x = 19,343.98 × 4,129.45
  4. Step 4: Simplify right side
    12,895.68x = 79,880,040.59
  5. Step 5: Solve for x
    x = 79,880,040.59/12,895.68
  6. Step 6: Final answer
    x = 6,194.33

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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.