Home / 20,923.18-28,873.99-11,491.74

Finding the Fourth Proportional to 20,923.18, 28,873.99 and 11,491.74

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Solution

The fourth proportional to 20,923.18, 28,873.99 and 11,491.74 is: 15,858.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.18 : 28,873.99 = 11,491.74 : x
  2. Step 2: Convert to fraction form
    20,923.18/28,873.99 = 11,491.74/x
  3. Step 3: Cross multiply
    20,923.18x = 28,873.99 × 11,491.74
  4. Step 4: Simplify right side
    20,923.18x = 331,812,400.21
  5. Step 5: Solve for x
    x = 331,812,400.21/20,923.18
  6. Step 6: Final answer
    x = 15,858.60

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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.