Home / 20,491.30-28,277.24-11,416.45

Finding the Fourth Proportional to 20,491.30, 28,277.24 and 11,416.45

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Solution

The fourth proportional to 20,491.30, 28,277.24 and 11,416.45 is: 15,754.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,491.30 : 28,277.24 = 11,416.45 : x
  2. Step 2: Convert to fraction form
    20,491.30/28,277.24 = 11,416.45/x
  3. Step 3: Cross multiply
    20,491.30x = 28,277.24 × 11,416.45
  4. Step 4: Simplify right side
    20,491.30x = 322,825,701.37
  5. Step 5: Solve for x
    x = 322,825,701.37/20,491.30
  6. Step 6: Final answer
    x = 15,754.28

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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.