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Finding the Fourth Proportional to 20,495.58, 30,750.87 and 8,652.30

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Solution

The fourth proportional to 20,495.58, 30,750.87 and 8,652.30 is: 12,981.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,495.58 : 30,750.87 = 8,652.30 : x
  2. Step 2: Convert to fraction form
    20,495.58/30,750.87 = 8,652.30/x
  3. Step 3: Cross multiply
    20,495.58x = 30,750.87 × 8,652.30
  4. Step 4: Simplify right side
    20,495.58x = 266,065,752.50
  5. Step 5: Solve for x
    x = 266,065,752.50/20,495.58
  6. Step 6: Final answer
    x = 12,981.62

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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.