Home / 18,777.12-28,109.56-11,359.16

Finding the Fourth Proportional to 18,777.12, 28,109.56 and 11,359.16

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Solution

The fourth proportional to 18,777.12, 28,109.56 and 11,359.16 is: 17,004.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,777.12 : 28,109.56 = 11,359.16 : x
  2. Step 2: Convert to fraction form
    18,777.12/28,109.56 = 11,359.16/x
  3. Step 3: Cross multiply
    18,777.12x = 28,109.56 × 11,359.16
  4. Step 4: Simplify right side
    18,777.12x = 319,300,989.57
  5. Step 5: Solve for x
    x = 319,300,989.57/18,777.12
  6. Step 6: Final answer
    x = 17,004.79

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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.