Home / 20,285.20-30,423.20-9,184.56

Finding the Fourth Proportional to 20,285.20, 30,423.20 and 9,184.56

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Solution

The fourth proportional to 20,285.20, 30,423.20 and 9,184.56 is: 13,774.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.20 : 30,423.20 = 9,184.56 : x
  2. Step 2: Convert to fraction form
    20,285.20/30,423.20 = 9,184.56/x
  3. Step 3: Cross multiply
    20,285.20x = 30,423.20 × 9,184.56
  4. Step 4: Simplify right side
    20,285.20x = 279,423,705.79
  5. Step 5: Solve for x
    x = 279,423,705.79/20,285.20
  6. Step 6: Final answer
    x = 13,774.76

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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.