Home / 19,439.99-26,826.89-11,379.20

Finding the Fourth Proportional to 19,439.99, 26,826.89 and 11,379.20

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Solution

The fourth proportional to 19,439.99, 26,826.89 and 11,379.20 is: 15,703.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,439.99 : 26,826.89 = 11,379.20 : x
  2. Step 2: Convert to fraction form
    19,439.99/26,826.89 = 11,379.20/x
  3. Step 3: Cross multiply
    19,439.99x = 26,826.89 × 11,379.20
  4. Step 4: Simplify right side
    19,439.99x = 305,268,355.66
  5. Step 5: Solve for x
    x = 305,268,355.66/19,439.99
  6. Step 6: Final answer
    x = 15,703.12

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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.