Home / 15,350.15-21,181.70-8,635.64

Finding the Fourth Proportional to 15,350.15, 21,181.70 and 8,635.64

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Solution

The fourth proportional to 15,350.15, 21,181.70 and 8,635.64 is: 11,916.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,350.15 : 21,181.70 = 8,635.64 : x
  2. Step 2: Convert to fraction form
    15,350.15/21,181.70 = 8,635.64/x
  3. Step 3: Cross multiply
    15,350.15x = 21,181.70 × 8,635.64
  4. Step 4: Simplify right side
    15,350.15x = 182,917,386.70
  5. Step 5: Solve for x
    x = 182,917,386.70/15,350.15
  6. Step 6: Final answer
    x = 11,916.33

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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.