Home / 20,491.04-28,277.57-11,538.59

Finding the Fourth Proportional to 20,491.04, 28,277.57 and 11,538.59

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Solution

The fourth proportional to 20,491.04, 28,277.57 and 11,538.59 is: 15,923.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,491.04 : 28,277.57 = 11,538.59 : x
  2. Step 2: Convert to fraction form
    20,491.04/28,277.57 = 11,538.59/x
  3. Step 3: Cross multiply
    20,491.04x = 28,277.57 × 11,538.59
  4. Step 4: Simplify right side
    20,491.04x = 326,283,173.88
  5. Step 5: Solve for x
    x = 326,283,173.88/20,491.04
  6. Step 6: Final answer
    x = 15,923.21

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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.