Home / 20,568.41-28,384.41-11,136.95

Finding the Fourth Proportional to 20,568.41, 28,384.41 and 11,136.95

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Solution

The fourth proportional to 20,568.41, 28,384.41 and 11,136.95 is: 15,368.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,568.41 : 28,384.41 = 11,136.95 : x
  2. Step 2: Convert to fraction form
    20,568.41/28,384.41 = 11,136.95/x
  3. Step 3: Cross multiply
    20,568.41x = 28,384.41 × 11,136.95
  4. Step 4: Simplify right side
    20,568.41x = 316,115,754.95
  5. Step 5: Solve for x
    x = 316,115,754.95/20,568.41
  6. Step 6: Final answer
    x = 15,368.99

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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.