Home / 28,621.68-42,936.44-9,896.70

Finding the Fourth Proportional to 28,621.68, 42,936.44 and 9,896.70

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Solution

The fourth proportional to 28,621.68, 42,936.44 and 9,896.70 is: 14,846.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,621.68 : 42,936.44 = 9,896.70 : x
  2. Step 2: Convert to fraction form
    28,621.68/42,936.44 = 9,896.70/x
  3. Step 3: Cross multiply
    28,621.68x = 42,936.44 × 9,896.70
  4. Step 4: Simplify right side
    28,621.68x = 424,929,016.26
  5. Step 5: Solve for x
    x = 424,929,016.26/28,621.68
  6. Step 6: Final answer
    x = 14,846.40

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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.