Home / 11,308.70-15,618.21-8,820.38

Finding the Fourth Proportional to 11,308.70, 15,618.21 and 8,820.38

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Solution

The fourth proportional to 11,308.70, 15,618.21 and 8,820.38 is: 12,181.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,308.70 : 15,618.21 = 8,820.38 : x
  2. Step 2: Convert to fraction form
    11,308.70/15,618.21 = 8,820.38/x
  3. Step 3: Cross multiply
    11,308.70x = 15,618.21 × 8,820.38
  4. Step 4: Simplify right side
    11,308.70x = 137,758,547.12
  5. Step 5: Solve for x
    x = 137,758,547.12/11,308.70
  6. Step 6: Final answer
    x = 12,181.64

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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.