Home / 28,755.35-43,143.72-12,955.63

Finding the Fourth Proportional to 28,755.35, 43,143.72 and 12,955.63

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Solution

The fourth proportional to 28,755.35, 43,143.72 and 12,955.63 is: 19,438.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,755.35 : 43,143.72 = 12,955.63 : x
  2. Step 2: Convert to fraction form
    28,755.35/43,143.72 = 12,955.63/x
  3. Step 3: Cross multiply
    28,755.35x = 43,143.72 × 12,955.63
  4. Step 4: Simplify right side
    28,755.35x = 558,954,073.14
  5. Step 5: Solve for x
    x = 558,954,073.14/28,755.35
  6. Step 6: Final answer
    x = 19,438.26

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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.