Home / 19,879.80-27,434.71-11,384.67

Finding the Fourth Proportional to 19,879.80, 27,434.71 and 11,384.67

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Solution

The fourth proportional to 19,879.80, 27,434.71 and 11,384.67 is: 15,711.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.80 : 27,434.71 = 11,384.67 : x
  2. Step 2: Convert to fraction form
    19,879.80/27,434.71 = 11,384.67/x
  3. Step 3: Cross multiply
    19,879.80x = 27,434.71 × 11,384.67
  4. Step 4: Simplify right side
    19,879.80x = 312,335,098.70
  5. Step 5: Solve for x
    x = 312,335,098.70/19,879.80
  6. Step 6: Final answer
    x = 15,711.18

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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.