Home / 20,136.65-27,787.81-11,184.73

Finding the Fourth Proportional to 20,136.65, 27,787.81 and 11,184.73

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Solution

The fourth proportional to 20,136.65, 27,787.81 and 11,184.73 is: 15,434.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.65 : 27,787.81 = 11,184.73 : x
  2. Step 2: Convert to fraction form
    20,136.65/27,787.81 = 11,184.73/x
  3. Step 3: Cross multiply
    20,136.65x = 27,787.81 × 11,184.73
  4. Step 4: Simplify right side
    20,136.65x = 310,799,075.68
  5. Step 5: Solve for x
    x = 310,799,075.68/20,136.65
  6. Step 6: Final answer
    x = 15,434.49

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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.