Home / 21,783.51-30,062.99-12,832.79

Finding the Fourth Proportional to 21,783.51, 30,062.99 and 12,832.79

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Solution

The fourth proportional to 21,783.51, 30,062.99 and 12,832.79 is: 17,710.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,783.51 : 30,062.99 = 12,832.79 : x
  2. Step 2: Convert to fraction form
    21,783.51/30,062.99 = 12,832.79/x
  3. Step 3: Cross multiply
    21,783.51x = 30,062.99 × 12,832.79
  4. Step 4: Simplify right side
    21,783.51x = 385,791,919.21
  5. Step 5: Solve for x
    x = 385,791,919.21/21,783.51
  6. Step 6: Final answer
    x = 17,710.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.