Home / 13,181.18-18,179.76-8,465.90

Finding the Fourth Proportional to 13,181.18, 18,179.76 and 8,465.90

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Solution

The fourth proportional to 13,181.18, 18,179.76 and 8,465.90 is: 11,676.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.18 : 18,179.76 = 8,465.90 : x
  2. Step 2: Convert to fraction form
    13,181.18/18,179.76 = 8,465.90/x
  3. Step 3: Cross multiply
    13,181.18x = 18,179.76 × 8,465.90
  4. Step 4: Simplify right side
    13,181.18x = 153,908,030.18
  5. Step 5: Solve for x
    x = 153,908,030.18/13,181.18
  6. Step 6: Final answer
    x = 11,676.35

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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.