Home / 10,682.20-16,007.10-7,215.40

Finding the Fourth Proportional to 10,682.20, 16,007.10 and 7,215.40

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Solution

The fourth proportional to 10,682.20, 16,007.10 and 7,215.40 is: 10,812.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,682.20 : 16,007.10 = 7,215.40 : x
  2. Step 2: Convert to fraction form
    10,682.20/16,007.10 = 7,215.40/x
  3. Step 3: Cross multiply
    10,682.20x = 16,007.10 × 7,215.40
  4. Step 4: Simplify right side
    10,682.20x = 115,497,629.34
  5. Step 5: Solve for x
    x = 115,497,629.34/10,682.20
  6. Step 6: Final answer
    x = 10,812.16

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1.5x scale

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.