Home / 20,703.90-31,033.53-10,161.65

Finding the Fourth Proportional to 20,703.90, 31,033.53 and 10,161.65

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Solution

The fourth proportional to 20,703.90, 31,033.53 and 10,161.65 is: 15,231.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.90 : 31,033.53 = 10,161.65 : x
  2. Step 2: Convert to fraction form
    20,703.90/31,033.53 = 10,161.65/x
  3. Step 3: Cross multiply
    20,703.90x = 31,033.53 × 10,161.65
  4. Step 4: Simplify right side
    20,703.90x = 315,351,947.71
  5. Step 5: Solve for x
    x = 315,351,947.71/20,703.90
  6. Step 6: Final answer
    x = 15,231.52

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1.5x scale

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.