Home / 19,109.92-28,614.12-12,860.32

Finding the Fourth Proportional to 19,109.92, 28,614.12 and 12,860.32

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Solution

The fourth proportional to 19,109.92, 28,614.12 and 12,860.32 is: 19,256.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,109.92 : 28,614.12 = 12,860.32 : x
  2. Step 2: Convert to fraction form
    19,109.92/28,614.12 = 12,860.32/x
  3. Step 3: Cross multiply
    19,109.92x = 28,614.12 × 12,860.32
  4. Step 4: Simplify right side
    19,109.92x = 367,986,739.72
  5. Step 5: Solve for x
    x = 367,986,739.72/19,109.92
  6. Step 6: Final answer
    x = 19,256.32

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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.