Home / 20,698.25-28,562.67-11,499.26

Finding the Fourth Proportional to 20,698.25, 28,562.67 and 11,499.26

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Solution

The fourth proportional to 20,698.25, 28,562.67 and 11,499.26 is: 15,868.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.25 : 28,562.67 = 11,499.26 : x
  2. Step 2: Convert to fraction form
    20,698.25/28,562.67 = 11,499.26/x
  3. Step 3: Cross multiply
    20,698.25x = 28,562.67 × 11,499.26
  4. Step 4: Simplify right side
    20,698.25x = 328,449,425.81
  5. Step 5: Solve for x
    x = 328,449,425.81/20,698.25
  6. Step 6: Final answer
    x = 15,868.47

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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.