Home / 20,933.58-28,888.36-11,502.16

Finding the Fourth Proportional to 20,933.58, 28,888.36 and 11,502.16

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Solution

The fourth proportional to 20,933.58, 28,888.36 and 11,502.16 is: 15,872.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.58 : 28,888.36 = 11,502.16 : x
  2. Step 2: Convert to fraction form
    20,933.58/28,888.36 = 11,502.16/x
  3. Step 3: Cross multiply
    20,933.58x = 28,888.36 × 11,502.16
  4. Step 4: Simplify right side
    20,933.58x = 332,278,538.86
  5. Step 5: Solve for x
    x = 332,278,538.86/20,933.58
  6. Step 6: Final answer
    x = 15,872.99

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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.