Home / 31,453.18-43,358.43-20,824.36

Finding the Fourth Proportional to 31,453.18, 43,358.43 and 20,824.36

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Solution

The fourth proportional to 31,453.18, 43,358.43 and 20,824.36 is: 28,706.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,453.18 : 43,358.43 = 20,824.36 : x
  2. Step 2: Convert to fraction form
    31,453.18/43,358.43 = 20,824.36/x
  3. Step 3: Cross multiply
    31,453.18x = 43,358.43 × 20,824.36
  4. Step 4: Simplify right side
    31,453.18x = 902,911,555.35
  5. Step 5: Solve for x
    x = 902,911,555.35/31,453.18
  6. Step 6: Final answer
    x = 28,706.53

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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.