Home / 18,515.84-27,778.04-5,368.40

Finding the Fourth Proportional to 18,515.84, 27,778.04 and 5,368.40

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Solution

The fourth proportional to 18,515.84, 27,778.04 and 5,368.40 is: 8,053.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.84 : 27,778.04 = 5,368.40 : x
  2. Step 2: Convert to fraction form
    18,515.84/27,778.04 = 5,368.40/x
  3. Step 3: Cross multiply
    18,515.84x = 27,778.04 × 5,368.40
  4. Step 4: Simplify right side
    18,515.84x = 149,123,629.94
  5. Step 5: Solve for x
    x = 149,123,629.94/18,515.84
  6. Step 6: Final answer
    x = 8,053.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.