Home / 19,105.20-28,657.64-7,426.64

Finding the Fourth Proportional to 19,105.20, 28,657.64 and 7,426.64

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Solution

The fourth proportional to 19,105.20, 28,657.64 and 7,426.64 is: 11,139.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,105.20 : 28,657.64 = 7,426.64 : x
  2. Step 2: Convert to fraction form
    19,105.20/28,657.64 = 7,426.64/x
  3. Step 3: Cross multiply
    19,105.20x = 28,657.64 × 7,426.64
  4. Step 4: Simplify right side
    19,105.20x = 212,829,975.53
  5. Step 5: Solve for x
    x = 212,829,975.53/19,105.20
  6. Step 6: Final answer
    x = 11,139.90

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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.