Home / 31,749.12-43,812.36-18,322.76

Finding the Fourth Proportional to 31,749.12, 43,812.36 and 18,322.76

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Solution

The fourth proportional to 31,749.12, 43,812.36 and 18,322.76 is: 25,284.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,749.12 : 43,812.36 = 18,322.76 : x
  2. Step 2: Convert to fraction form
    31,749.12/43,812.36 = 18,322.76/x
  3. Step 3: Cross multiply
    31,749.12x = 43,812.36 × 18,322.76
  4. Step 4: Simplify right side
    31,749.12x = 802,763,357.31
  5. Step 5: Solve for x
    x = 802,763,357.31/31,749.12
  6. Step 6: Final answer
    x = 25,284.59

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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.