Home / 21,276.55-31,919.43-6,485.08

Finding the Fourth Proportional to 21,276.55, 31,919.43 and 6,485.08

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Solution

The fourth proportional to 21,276.55, 31,919.43 and 6,485.08 is: 9,729.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.55 : 31,919.43 = 6,485.08 : x
  2. Step 2: Convert to fraction form
    21,276.55/31,919.43 = 6,485.08/x
  3. Step 3: Cross multiply
    21,276.55x = 31,919.43 × 6,485.08
  4. Step 4: Simplify right side
    21,276.55x = 207,000,057.10
  5. Step 5: Solve for x
    x = 207,000,057.10/21,276.55
  6. Step 6: Final answer
    x = 9,729.02

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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.