Home / 21,188.01-31,781.16-6,396.51

Finding the Fourth Proportional to 21,188.01, 31,781.16 and 6,396.51

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Solution

The fourth proportional to 21,188.01, 31,781.16 and 6,396.51 is: 9,594.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.01 : 31,781.16 = 6,396.51 : x
  2. Step 2: Convert to fraction form
    21,188.01/31,781.16 = 6,396.51/x
  3. Step 3: Cross multiply
    21,188.01x = 31,781.16 × 6,396.51
  4. Step 4: Simplify right side
    21,188.01x = 203,288,507.75
  5. Step 5: Solve for x
    x = 203,288,507.75/21,188.01
  6. Step 6: Final answer
    x = 9,594.51

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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.