Home / 19,639.19-29,458.79-13,821.77

Finding the Fourth Proportional to 19,639.19, 29,458.79 and 13,821.77

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Solution

The fourth proportional to 19,639.19, 29,458.79 and 13,821.77 is: 20,732.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.19 : 29,458.79 = 13,821.77 : x
  2. Step 2: Convert to fraction form
    19,639.19/29,458.79 = 13,821.77/x
  3. Step 3: Cross multiply
    19,639.19x = 29,458.79 × 13,821.77
  4. Step 4: Simplify right side
    19,639.19x = 407,172,550.75
  5. Step 5: Solve for x
    x = 407,172,550.75/19,639.19
  6. Step 6: Final answer
    x = 20,732.66

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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.