Home / 31,400.79-43,322.38-19,459.77

Finding the Fourth Proportional to 31,400.79, 43,322.38 and 19,459.77

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Solution

The fourth proportional to 31,400.79, 43,322.38 and 19,459.77 is: 26,847.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,400.79 : 43,322.38 = 19,459.77 : x
  2. Step 2: Convert to fraction form
    31,400.79/43,322.38 = 19,459.77/x
  3. Step 3: Cross multiply
    31,400.79x = 43,322.38 × 19,459.77
  4. Step 4: Simplify right side
    31,400.79x = 843,043,453.35
  5. Step 5: Solve for x
    x = 843,043,453.35/31,400.79
  6. Step 6: Final answer
    x = 26,847.84

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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.