Home / 20,384.45-30,579.72-7,235.72

Finding the Fourth Proportional to 20,384.45, 30,579.72 and 7,235.72

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Solution

The fourth proportional to 20,384.45, 30,579.72 and 7,235.72 is: 10,854.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,384.45 : 30,579.72 = 7,235.72 : x
  2. Step 2: Convert to fraction form
    20,384.45/30,579.72 = 7,235.72/x
  3. Step 3: Cross multiply
    20,384.45x = 30,579.72 × 7,235.72
  4. Step 4: Simplify right side
    20,384.45x = 221,266,291.60
  5. Step 5: Solve for x
    x = 221,266,291.60/20,384.45
  6. Step 6: Final answer
    x = 10,854.66

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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.