Home / 31,405.11-43,328.32-19,464.09

Finding the Fourth Proportional to 31,405.11, 43,328.32 and 19,464.09

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Solution

The fourth proportional to 31,405.11, 43,328.32 and 19,464.09 is: 26,853.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,405.11 : 43,328.32 = 19,464.09 : x
  2. Step 2: Convert to fraction form
    31,405.11/43,328.32 = 19,464.09/x
  3. Step 3: Cross multiply
    31,405.11x = 43,328.32 × 19,464.09
  4. Step 4: Simplify right side
    31,405.11x = 843,346,320.03
  5. Step 5: Solve for x
    x = 843,346,320.03/31,405.11
  6. Step 6: Final answer
    x = 26,853.79

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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.