Home / 21,327.99-31,998.13-6,539.09

Finding the Fourth Proportional to 21,327.99, 31,998.13 and 6,539.09

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Solution

The fourth proportional to 21,327.99, 31,998.13 and 6,539.09 is: 9,810.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.99 : 31,998.13 = 6,539.09 : x
  2. Step 2: Convert to fraction form
    21,327.99/31,998.13 = 6,539.09/x
  3. Step 3: Cross multiply
    21,327.99x = 31,998.13 × 6,539.09
  4. Step 4: Simplify right side
    21,327.99x = 209,238,475.56
  5. Step 5: Solve for x
    x = 209,238,475.56/21,327.99
  6. Step 6: Final answer
    x = 9,810.51

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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.