Home / 16,905.40-25,358.22-5,218.60

Finding the Fourth Proportional to 16,905.40, 25,358.22 and 5,218.60

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Solution

The fourth proportional to 16,905.40, 25,358.22 and 5,218.60 is: 7,827.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,905.40 : 25,358.22 = 5,218.60 : x
  2. Step 2: Convert to fraction form
    16,905.40/25,358.22 = 5,218.60/x
  3. Step 3: Cross multiply
    16,905.40x = 25,358.22 × 5,218.60
  4. Step 4: Simplify right side
    16,905.40x = 132,334,406.89
  5. Step 5: Solve for x
    x = 132,334,406.89/16,905.40
  6. Step 6: Final answer
    x = 7,827.94

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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.