Home / 20,120.08-30,182.46-7,649.50

Finding the Fourth Proportional to 20,120.08, 30,182.46 and 7,649.50

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Solution

The fourth proportional to 20,120.08, 30,182.46 and 7,649.50 is: 11,475.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.08 : 30,182.46 = 7,649.50 : x
  2. Step 2: Convert to fraction form
    20,120.08/30,182.46 = 7,649.50/x
  3. Step 3: Cross multiply
    20,120.08x = 30,182.46 × 7,649.50
  4. Step 4: Simplify right side
    20,120.08x = 230,880,727.77
  5. Step 5: Solve for x
    x = 230,880,727.77/20,120.08
  6. Step 6: Final answer
    x = 11,475.14

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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.