Home / 31,403.80-43,328.46-19,467.64

Finding the Fourth Proportional to 31,403.80, 43,328.46 and 19,467.64

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Solution

The fourth proportional to 31,403.80, 43,328.46 and 19,467.64 is: 26,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,403.80 : 43,328.46 = 19,467.64 : x
  2. Step 2: Convert to fraction form
    31,403.80/43,328.46 = 19,467.64/x
  3. Step 3: Cross multiply
    31,403.80x = 43,328.46 × 19,467.64
  4. Step 4: Simplify right side
    31,403.80x = 843,502,861.03
  5. Step 5: Solve for x
    x = 843,502,861.03/31,403.80
  6. Step 6: Final answer
    x = 26,859.90

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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.