Home / 13,269.15-18,308.12-8,547.75

Finding the Fourth Proportional to 13,269.15, 18,308.12 and 8,547.75

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Solution

The fourth proportional to 13,269.15, 18,308.12 and 8,547.75 is: 11,793.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,269.15 : 18,308.12 = 8,547.75 : x
  2. Step 2: Convert to fraction form
    13,269.15/18,308.12 = 8,547.75/x
  3. Step 3: Cross multiply
    13,269.15x = 18,308.12 × 8,547.75
  4. Step 4: Simplify right side
    13,269.15x = 156,493,189.99
  5. Step 5: Solve for x
    x = 156,493,189.99/13,269.15
  6. Step 6: Final answer
    x = 11,793.76

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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.