Home / 21,777.08-32,680.14-13,991.48

Finding the Fourth Proportional to 21,777.08, 32,680.14 and 13,991.48

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Solution

The fourth proportional to 21,777.08, 32,680.14 and 13,991.48 is: 20,996.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,777.08 : 32,680.14 = 13,991.48 : x
  2. Step 2: Convert to fraction form
    21,777.08/32,680.14 = 13,991.48/x
  3. Step 3: Cross multiply
    21,777.08x = 32,680.14 × 13,991.48
  4. Step 4: Simplify right side
    21,777.08x = 457,243,525.21
  5. Step 5: Solve for x
    x = 457,243,525.21/21,777.08
  6. Step 6: Final answer
    x = 20,996.55

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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.