Home / 20,833.25-28,759.37-13,289.94

Finding the Fourth Proportional to 20,833.25, 28,759.37 and 13,289.94

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Solution

The fourth proportional to 20,833.25, 28,759.37 and 13,289.94 is: 18,346.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.25 : 28,759.37 = 13,289.94 : x
  2. Step 2: Convert to fraction form
    20,833.25/28,759.37 = 13,289.94/x
  3. Step 3: Cross multiply
    20,833.25x = 28,759.37 × 13,289.94
  4. Step 4: Simplify right side
    20,833.25x = 382,210,235.29
  5. Step 5: Solve for x
    x = 382,210,235.29/20,833.25
  6. Step 6: Final answer
    x = 18,346.17

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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.