Home / 12,181.30-18,279.15-8,886.10

Finding the Fourth Proportional to 12,181.30, 18,279.15 and 8,886.10

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Solution

The fourth proportional to 12,181.30, 18,279.15 and 8,886.10 is: 13,334.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,181.30 : 18,279.15 = 8,886.10 : x
  2. Step 2: Convert to fraction form
    12,181.30/18,279.15 = 8,886.10/x
  3. Step 3: Cross multiply
    12,181.30x = 18,279.15 × 8,886.10
  4. Step 4: Simplify right side
    12,181.30x = 162,430,354.82
  5. Step 5: Solve for x
    x = 162,430,354.82/12,181.30
  6. Step 6: Final answer
    x = 13,334.40

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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.