Home / 20,933.42-28,888.80-11,980.22

Finding the Fourth Proportional to 20,933.42, 28,888.80 and 11,980.22

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Solution

The fourth proportional to 20,933.42, 28,888.80 and 11,980.22 is: 16,533.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.42 : 28,888.80 = 11,980.22 : x
  2. Step 2: Convert to fraction form
    20,933.42/28,888.80 = 11,980.22/x
  3. Step 3: Cross multiply
    20,933.42x = 28,888.80 × 11,980.22
  4. Step 4: Simplify right side
    20,933.42x = 346,094,179.54
  5. Step 5: Solve for x
    x = 346,094,179.54/20,933.42
  6. Step 6: Final answer
    x = 16,533.09

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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.