Home / 21,280.12-31,919.46-5,697.64

Finding the Fourth Proportional to 21,280.12, 31,919.46 and 5,697.64

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Solution

The fourth proportional to 21,280.12, 31,919.46 and 5,697.64 is: 8,546.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,280.12 : 31,919.46 = 5,697.64 : x
  2. Step 2: Convert to fraction form
    21,280.12/31,919.46 = 5,697.64/x
  3. Step 3: Cross multiply
    21,280.12x = 31,919.46 × 5,697.64
  4. Step 4: Simplify right side
    21,280.12x = 181,865,592.07
  5. Step 5: Solve for x
    x = 181,865,592.07/21,280.12
  6. Step 6: Final answer
    x = 8,546.27

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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.