Home / 21,181.05-31,771.62-6,389.99

Finding the Fourth Proportional to 21,181.05, 31,771.62 and 6,389.99

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Solution

The fourth proportional to 21,181.05, 31,771.62 and 6,389.99 is: 9,585.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.05 : 31,771.62 = 6,389.99 : x
  2. Step 2: Convert to fraction form
    21,181.05/31,771.62 = 6,389.99/x
  3. Step 3: Cross multiply
    21,181.05x = 31,771.62 × 6,389.99
  4. Step 4: Simplify right side
    21,181.05x = 203,020,294.37
  5. Step 5: Solve for x
    x = 203,020,294.37/21,181.05
  6. Step 6: Final answer
    x = 9,585.00

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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.