Home / 21,115.90-31,674.87-5,533.54

Finding the Fourth Proportional to 21,115.90, 31,674.87 and 5,533.54

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Solution

The fourth proportional to 21,115.90, 31,674.87 and 5,533.54 is: 8,300.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,115.90 : 31,674.87 = 5,533.54 : x
  2. Step 2: Convert to fraction form
    21,115.90/31,674.87 = 5,533.54/x
  3. Step 3: Cross multiply
    21,115.90x = 31,674.87 × 5,533.54
  4. Step 4: Simplify right side
    21,115.90x = 175,274,160.14
  5. Step 5: Solve for x
    x = 175,274,160.14/21,115.90
  6. Step 6: Final answer
    x = 8,300.58

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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.