Home / 19,411.20-26,786.30-11,455.92

Finding the Fourth Proportional to 19,411.20, 26,786.30 and 11,455.92

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Solution

The fourth proportional to 19,411.20, 26,786.30 and 11,455.92 is: 15,808.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,411.20 : 26,786.30 = 11,455.92 : x
  2. Step 2: Convert to fraction form
    19,411.20/26,786.30 = 11,455.92/x
  3. Step 3: Cross multiply
    19,411.20x = 26,786.30 × 11,455.92
  4. Step 4: Simplify right side
    19,411.20x = 306,861,652.62
  5. Step 5: Solve for x
    x = 306,861,652.62/19,411.20
  6. Step 6: Final answer
    x = 15,808.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.