Home / 28,755.41-43,143.81-12,955.70

Finding the Fourth Proportional to 28,755.41, 43,143.81 and 12,955.70

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Solution

The fourth proportional to 28,755.41, 43,143.81 and 12,955.70 is: 19,438.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,755.41 : 43,143.81 = 12,955.70 : x
  2. Step 2: Convert to fraction form
    28,755.41/43,143.81 = 12,955.70/x
  3. Step 3: Cross multiply
    28,755.41x = 43,143.81 × 12,955.70
  4. Step 4: Simplify right side
    28,755.41x = 558,958,043.50
  5. Step 5: Solve for x
    x = 558,958,043.50/28,755.41
  6. Step 6: Final answer
    x = 19,438.36

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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.