Home / 20,933.99-28,888.88-11,502.55

Finding the Fourth Proportional to 20,933.99, 28,888.88 and 11,502.55

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Solution

The fourth proportional to 20,933.99, 28,888.88 and 11,502.55 is: 15,873.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.99 : 28,888.88 = 11,502.55 : x
  2. Step 2: Convert to fraction form
    20,933.99/28,888.88 = 11,502.55/x
  3. Step 3: Cross multiply
    20,933.99x = 28,888.88 × 11,502.55
  4. Step 4: Simplify right side
    20,933.99x = 332,295,743.18
  5. Step 5: Solve for x
    x = 332,295,743.18/20,933.99
  6. Step 6: Final answer
    x = 15,873.51

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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.