Home / 20,355.29-30,485.54-19,794.77

Finding the Fourth Proportional to 20,355.29, 30,485.54 and 19,794.77

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Solution

The fourth proportional to 20,355.29, 30,485.54 and 19,794.77 is: 29,646.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,355.29 : 30,485.54 = 19,794.77 : x
  2. Step 2: Convert to fraction form
    20,355.29/30,485.54 = 19,794.77/x
  3. Step 3: Cross multiply
    20,355.29x = 30,485.54 × 19,794.77
  4. Step 4: Simplify right side
    20,355.29x = 603,454,252.63
  5. Step 5: Solve for x
    x = 603,454,252.63/20,355.29
  6. Step 6: Final answer
    x = 29,646.07

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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.