Home / 25,698.80-38,519.40-10,905.20

Finding the Fourth Proportional to 25,698.80, 38,519.40 and 10,905.20

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Solution

The fourth proportional to 25,698.80, 38,519.40 and 10,905.20 is: 16,345.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,698.80 : 38,519.40 = 10,905.20 : x
  2. Step 2: Convert to fraction form
    25,698.80/38,519.40 = 10,905.20/x
  3. Step 3: Cross multiply
    25,698.80x = 38,519.40 × 10,905.20
  4. Step 4: Simplify right side
    25,698.80x = 420,061,760.88
  5. Step 5: Solve for x
    x = 420,061,760.88/25,698.80
  6. Step 6: Final answer
    x = 16,345.58

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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.