Home / 20,936.48-31,403.28-9,852.80

Finding the Fourth Proportional to 20,936.48, 31,403.28 and 9,852.80

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Solution

The fourth proportional to 20,936.48, 31,403.28 and 9,852.80 is: 14,778.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.48 : 31,403.28 = 9,852.80 : x
  2. Step 2: Convert to fraction form
    20,936.48/31,403.28 = 9,852.80/x
  3. Step 3: Cross multiply
    20,936.48x = 31,403.28 × 9,852.80
  4. Step 4: Simplify right side
    20,936.48x = 309,410,237.18
  5. Step 5: Solve for x
    x = 309,410,237.18/20,936.48
  6. Step 6: Final answer
    x = 14,778.52

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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.