Home / 20,583.41-28,405.06-11,151.99

Finding the Fourth Proportional to 20,583.41, 28,405.06 and 11,151.99

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Solution

The fourth proportional to 20,583.41, 28,405.06 and 11,151.99 is: 15,389.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,583.41 : 28,405.06 = 11,151.99 : x
  2. Step 2: Convert to fraction form
    20,583.41/28,405.06 = 11,151.99/x
  3. Step 3: Cross multiply
    20,583.41x = 28,405.06 × 11,151.99
  4. Step 4: Simplify right side
    20,583.41x = 316,772,917.19
  5. Step 5: Solve for x
    x = 316,772,917.19/20,583.41
  6. Step 6: Final answer
    x = 15,389.72

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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.