Home / 31,458.87-43,410.63-18,536.13

Finding the Fourth Proportional to 31,458.87, 43,410.63 and 18,536.13

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Solution

The fourth proportional to 31,458.87, 43,410.63 and 18,536.13 is: 25,578.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,458.87 : 43,410.63 = 18,536.13 : x
  2. Step 2: Convert to fraction form
    31,458.87/43,410.63 = 18,536.13/x
  3. Step 3: Cross multiply
    31,458.87x = 43,410.63 × 18,536.13
  4. Step 4: Simplify right side
    31,458.87x = 804,665,150.57
  5. Step 5: Solve for x
    x = 804,665,150.57/31,458.87
  6. Step 6: Final answer
    x = 25,578.32

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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.