Home / 16,905.60-25,358.40-5,218.80

Finding the Fourth Proportional to 16,905.60, 25,358.40 and 5,218.80

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Solution

The fourth proportional to 16,905.60, 25,358.40 and 5,218.80 is: 7,828.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,905.60 : 25,358.40 = 5,218.80 : x
  2. Step 2: Convert to fraction form
    16,905.60/25,358.40 = 5,218.80/x
  3. Step 3: Cross multiply
    16,905.60x = 25,358.40 × 5,218.80
  4. Step 4: Simplify right side
    16,905.60x = 132,340,417.92
  5. Step 5: Solve for x
    x = 132,340,417.92/16,905.60
  6. Step 6: Final answer
    x = 7,828.20

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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.