Home / 19,390.12-29,027.77-11,970.73

Finding the Fourth Proportional to 19,390.12, 29,027.77 and 11,970.73

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Solution

The fourth proportional to 19,390.12, 29,027.77 and 11,970.73 is: 17,920.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,390.12 : 29,027.77 = 11,970.73 : x
  2. Step 2: Convert to fraction form
    19,390.12/29,027.77 = 11,970.73/x
  3. Step 3: Cross multiply
    19,390.12x = 29,027.77 × 11,970.73
  4. Step 4: Simplify right side
    19,390.12x = 347,483,597.17
  5. Step 5: Solve for x
    x = 347,483,597.17/19,390.12
  6. Step 6: Final answer
    x = 17,920.65

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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.