Home / 10,653.96-15,981.09-4,080.48

Finding the Fourth Proportional to 10,653.96, 15,981.09 and 4,080.48

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Solution

The fourth proportional to 10,653.96, 15,981.09 and 4,080.48 is: 6,120.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,653.96 : 15,981.09 = 4,080.48 : x
  2. Step 2: Convert to fraction form
    10,653.96/15,981.09 = 4,080.48/x
  3. Step 3: Cross multiply
    10,653.96x = 15,981.09 × 4,080.48
  4. Step 4: Simplify right side
    10,653.96x = 65,210,518.12
  5. Step 5: Solve for x
    x = 65,210,518.12/10,653.96
  6. Step 6: Final answer
    x = 6,120.78

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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.