Home / 13,754.49-20,634.78-4,990.10

Finding the Fourth Proportional to 13,754.49, 20,634.78 and 4,990.10

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Solution

The fourth proportional to 13,754.49, 20,634.78 and 4,990.10 is: 7,486.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,754.49 : 20,634.78 = 4,990.10 : x
  2. Step 2: Convert to fraction form
    13,754.49/20,634.78 = 4,990.10/x
  3. Step 3: Cross multiply
    13,754.49x = 20,634.78 × 4,990.10
  4. Step 4: Simplify right side
    13,754.49x = 102,969,512.50
  5. Step 5: Solve for x
    x = 102,969,512.50/13,754.49
  6. Step 6: Final answer
    x = 7,486.25

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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.