Home / 19,879.95-27,434.96-11,382.11

Finding the Fourth Proportional to 19,879.95, 27,434.96 and 11,382.11

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Solution

The fourth proportional to 19,879.95, 27,434.96 and 11,382.11 is: 15,707.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.95 : 27,434.96 = 11,382.11 : x
  2. Step 2: Convert to fraction form
    19,879.95/27,434.96 = 11,382.11/x
  3. Step 3: Cross multiply
    19,879.95x = 27,434.96 × 11,382.11
  4. Step 4: Simplify right side
    19,879.95x = 312,267,538.48
  5. Step 5: Solve for x
    x = 312,267,538.48/19,879.95
  6. Step 6: Final answer
    x = 15,707.66

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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.