Home / 13,619.14-18,785.90-8,574.64

Finding the Fourth Proportional to 13,619.14, 18,785.90 and 8,574.64

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Solution

The fourth proportional to 13,619.14, 18,785.90 and 8,574.64 is: 11,827.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.14 : 18,785.90 = 8,574.64 : x
  2. Step 2: Convert to fraction form
    13,619.14/18,785.90 = 8,574.64/x
  3. Step 3: Cross multiply
    13,619.14x = 18,785.90 × 8,574.64
  4. Step 4: Simplify right side
    13,619.14x = 161,082,329.58
  5. Step 5: Solve for x
    x = 161,082,329.58/13,619.14
  6. Step 6: Final answer
    x = 11,827.64

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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.