Home / 21,284.55-31,930.20-6,490.08

Finding the Fourth Proportional to 21,284.55, 31,930.20 and 6,490.08

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Solution

The fourth proportional to 21,284.55, 31,930.20 and 6,490.08 is: 9,736.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284.55 : 31,930.20 = 6,490.08 : x
  2. Step 2: Convert to fraction form
    21,284.55/31,930.20 = 6,490.08/x
  3. Step 3: Cross multiply
    21,284.55x = 31,930.20 × 6,490.08
  4. Step 4: Simplify right side
    21,284.55x = 207,229,552.42
  5. Step 5: Solve for x
    x = 207,229,552.42/21,284.55
  6. Step 6: Final answer
    x = 9,736.15

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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.