Home / 12,860.20-19,285.50-5,465.22

Finding the Fourth Proportional to 12,860.20, 19,285.50 and 5,465.22

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Solution

The fourth proportional to 12,860.20, 19,285.50 and 5,465.22 is: 8,195.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,860.20 : 19,285.50 = 5,465.22 : x
  2. Step 2: Convert to fraction form
    12,860.20/19,285.50 = 5,465.22/x
  3. Step 3: Cross multiply
    12,860.20x = 19,285.50 × 5,465.22
  4. Step 4: Simplify right side
    12,860.20x = 105,399,500.31
  5. Step 5: Solve for x
    x = 105,399,500.31/12,860.20
  6. Step 6: Final answer
    x = 8,195.79

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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.