Home / 10,812.21-16,217.88-3,417.09

Finding the Fourth Proportional to 10,812.21, 16,217.88 and 3,417.09

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Solution

The fourth proportional to 10,812.21, 16,217.88 and 3,417.09 is: 5,125.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.21 : 16,217.88 = 3,417.09 : x
  2. Step 2: Convert to fraction form
    10,812.21/16,217.88 = 3,417.09/x
  3. Step 3: Cross multiply
    10,812.21x = 16,217.88 × 3,417.09
  4. Step 4: Simplify right side
    10,812.21x = 55,417,955.57
  5. Step 5: Solve for x
    x = 55,417,955.57/10,812.21
  6. Step 6: Final answer
    x = 5,125.50

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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.