Home / 20,966.58-28,933.74-11,535.12

Finding the Fourth Proportional to 20,966.58, 28,933.74 and 11,535.12

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Solution

The fourth proportional to 20,966.58, 28,933.74 and 11,535.12 is: 15,918.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.58 : 28,933.74 = 11,535.12 : x
  2. Step 2: Convert to fraction form
    20,966.58/28,933.74 = 11,535.12/x
  3. Step 3: Cross multiply
    20,966.58x = 28,933.74 × 11,535.12
  4. Step 4: Simplify right side
    20,966.58x = 333,754,162.95
  5. Step 5: Solve for x
    x = 333,754,162.95/20,966.58
  6. Step 6: Final answer
    x = 15,918.39

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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.