Home / 18,862.21-28,297.41-5,715.60

Finding the Fourth Proportional to 18,862.21, 28,297.41 and 5,715.60

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Solution

The fourth proportional to 18,862.21, 28,297.41 and 5,715.60 is: 8,574.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,862.21 : 28,297.41 = 5,715.60 : x
  2. Step 2: Convert to fraction form
    18,862.21/28,297.41 = 5,715.60/x
  3. Step 3: Cross multiply
    18,862.21x = 28,297.41 × 5,715.60
  4. Step 4: Simplify right side
    18,862.21x = 161,736,676.60
  5. Step 5: Solve for x
    x = 161,736,676.60/18,862.21
  6. Step 6: Final answer
    x = 8,574.64

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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.