Home / 20,933.85-28,888.71-11,502.42

Finding the Fourth Proportional to 20,933.85, 28,888.71 and 11,502.42

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Solution

The fourth proportional to 20,933.85, 28,888.71 and 11,502.42 is: 15,873.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.85 : 28,888.71 = 11,502.42 : x
  2. Step 2: Convert to fraction form
    20,933.85/28,888.71 = 11,502.42/x
  3. Step 3: Cross multiply
    20,933.85x = 28,888.71 × 11,502.42
  4. Step 4: Simplify right side
    20,933.85x = 332,290,075.68
  5. Step 5: Solve for x
    x = 332,290,075.68/20,933.85
  6. Step 6: Final answer
    x = 15,873.34

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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.