Home / 19,165.20-28,730.70-7,475.70

Finding the Fourth Proportional to 19,165.20, 28,730.70 and 7,475.70

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Solution

The fourth proportional to 19,165.20, 28,730.70 and 7,475.70 is: 11,206.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,165.20 : 28,730.70 = 7,475.70 : x
  2. Step 2: Convert to fraction form
    19,165.20/28,730.70 = 7,475.70/x
  3. Step 3: Cross multiply
    19,165.20x = 28,730.70 × 7,475.70
  4. Step 4: Simplify right side
    19,165.20x = 214,782,093.99
  5. Step 5: Solve for x
    x = 214,782,093.99/19,165.20
  6. Step 6: Final answer
    x = 11,206.88

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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.