Home / 28,518.89-42,713.73-13,738.41

Finding the Fourth Proportional to 28,518.89, 42,713.73 and 13,738.41

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Solution

The fourth proportional to 28,518.89, 42,713.73 and 13,738.41 is: 20,576.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,518.89 : 42,713.73 = 13,738.41 : x
  2. Step 2: Convert to fraction form
    28,518.89/42,713.73 = 13,738.41/x
  3. Step 3: Cross multiply
    28,518.89x = 42,713.73 × 13,738.41
  4. Step 4: Simplify right side
    28,518.89x = 586,818,735.37
  5. Step 5: Solve for x
    x = 586,818,735.37/28,518.89
  6. Step 6: Final answer
    x = 20,576.50

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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.