Home / 31,713.55-47,535.99-20,628.16

Finding the Fourth Proportional to 31,713.55, 47,535.99 and 20,628.16

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Solution

The fourth proportional to 31,713.55, 47,535.99 and 20,628.16 is: 30,919.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,713.55 : 47,535.99 = 20,628.16 : x
  2. Step 2: Convert to fraction form
    31,713.55/47,535.99 = 20,628.16/x
  3. Step 3: Cross multiply
    31,713.55x = 47,535.99 × 20,628.16
  4. Step 4: Simplify right side
    31,713.55x = 980,580,007.48
  5. Step 5: Solve for x
    x = 980,580,007.48/31,713.55
  6. Step 6: Final answer
    x = 30,919.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.