Home / 20,326.57-30,498.58-7,855.35

Finding the Fourth Proportional to 20,326.57, 30,498.58 and 7,855.35

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Solution

The fourth proportional to 20,326.57, 30,498.58 and 7,855.35 is: 11,786.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,326.57 : 30,498.58 = 7,855.35 : x
  2. Step 2: Convert to fraction form
    20,326.57/30,498.58 = 7,855.35/x
  3. Step 3: Cross multiply
    20,326.57x = 30,498.58 × 7,855.35
  4. Step 4: Simplify right side
    20,326.57x = 239,577,000.76
  5. Step 5: Solve for x
    x = 239,577,000.76/20,326.57
  6. Step 6: Final answer
    x = 11,786.40

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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.