Home / 20,124.70-30,181.16-7,635.72

Finding the Fourth Proportional to 20,124.70, 30,181.16 and 7,635.72

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Solution

The fourth proportional to 20,124.70, 30,181.16 and 7,635.72 is: 11,451.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.70 : 30,181.16 = 7,635.72 : x
  2. Step 2: Convert to fraction form
    20,124.70/30,181.16 = 7,635.72/x
  3. Step 3: Cross multiply
    20,124.70x = 30,181.16 × 7,635.72
  4. Step 4: Simplify right side
    20,124.70x = 230,454,887.04
  5. Step 5: Solve for x
    x = 230,454,887.04/20,124.70
  6. Step 6: Final answer
    x = 11,451.35

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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.