Home / 28,534.94-42,812.56-12,738.54

Finding the Fourth Proportional to 28,534.94, 42,812.56 and 12,738.54

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Solution

The fourth proportional to 28,534.94, 42,812.56 and 12,738.54 is: 19,112.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,534.94 : 42,812.56 = 12,738.54 : x
  2. Step 2: Convert to fraction form
    28,534.94/42,812.56 = 12,738.54/x
  3. Step 3: Cross multiply
    28,534.94x = 42,812.56 × 12,738.54
  4. Step 4: Simplify right side
    28,534.94x = 545,369,508.06
  5. Step 5: Solve for x
    x = 545,369,508.06/28,534.94
  6. Step 6: Final answer
    x = 19,112.34

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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.