Home / 10,809.12-16,214.60-3,411.60

Finding the Fourth Proportional to 10,809.12, 16,214.60 and 3,411.60

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Solution

The fourth proportional to 10,809.12, 16,214.60 and 3,411.60 is: 5,117.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,809.12 : 16,214.60 = 3,411.60 : x
  2. Step 2: Convert to fraction form
    10,809.12/16,214.60 = 3,411.60/x
  3. Step 3: Cross multiply
    10,809.12x = 16,214.60 × 3,411.60
  4. Step 4: Simplify right side
    10,809.12x = 55,317,729.36
  5. Step 5: Solve for x
    x = 55,317,729.36/10,809.12
  6. Step 6: Final answer
    x = 5,117.69

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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.