Home / 31,525.47-43,491.33-20,756.43

Finding the Fourth Proportional to 31,525.47, 43,491.33 and 20,756.43

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Solution

The fourth proportional to 31,525.47, 43,491.33 and 20,756.43 is: 28,634.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,525.47 : 43,491.33 = 20,756.43 : x
  2. Step 2: Convert to fraction form
    31,525.47/43,491.33 = 20,756.43/x
  3. Step 3: Cross multiply
    31,525.47x = 43,491.33 × 20,756.43
  4. Step 4: Simplify right side
    31,525.47x = 902,724,746.75
  5. Step 5: Solve for x
    x = 902,724,746.75/31,525.47
  6. Step 6: Final answer
    x = 28,634.78

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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.