Home / 18,656.19-27,980.24-5,505.57

Finding the Fourth Proportional to 18,656.19, 27,980.24 and 5,505.57

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Solution

The fourth proportional to 18,656.19, 27,980.24 and 5,505.57 is: 8,257.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,656.19 : 27,980.24 = 5,505.57 : x
  2. Step 2: Convert to fraction form
    18,656.19/27,980.24 = 5,505.57/x
  3. Step 3: Cross multiply
    18,656.19x = 27,980.24 × 5,505.57
  4. Step 4: Simplify right side
    18,656.19x = 154,047,142.41
  5. Step 5: Solve for x
    x = 154,047,142.41/18,656.19
  6. Step 6: Final answer
    x = 8,257.16

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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.