Home / 13,471.58-18,581.88-8,427.04

Finding the Fourth Proportional to 13,471.58, 18,581.88 and 8,427.04

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Solution

The fourth proportional to 13,471.58, 18,581.88 and 8,427.04 is: 11,623.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,471.58 : 18,581.88 = 8,427.04 : x
  2. Step 2: Convert to fraction form
    13,471.58/18,581.88 = 8,427.04/x
  3. Step 3: Cross multiply
    13,471.58x = 18,581.88 × 8,427.04
  4. Step 4: Simplify right side
    13,471.58x = 156,590,246.04
  5. Step 5: Solve for x
    x = 156,590,246.04/13,471.58
  6. Step 6: Final answer
    x = 11,623.75

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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.