Home / 19,985.15-29,924.42-12,944.85

Finding the Fourth Proportional to 19,985.15, 29,924.42 and 12,944.85

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Solution

The fourth proportional to 19,985.15, 29,924.42 and 12,944.85 is: 19,382.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.15 : 29,924.42 = 12,944.85 : x
  2. Step 2: Convert to fraction form
    19,985.15/29,924.42 = 12,944.85/x
  3. Step 3: Cross multiply
    19,985.15x = 29,924.42 × 12,944.85
  4. Step 4: Simplify right side
    19,985.15x = 387,367,063.51
  5. Step 5: Solve for x
    x = 387,367,063.51/19,985.15
  6. Step 6: Final answer
    x = 19,382.75

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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.