Home / 20,751.72-31,136.73-10,888.62

Finding the Fourth Proportional to 20,751.72, 31,136.73 and 10,888.62

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Solution

The fourth proportional to 20,751.72, 31,136.73 and 10,888.62 is: 16,337.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.72 : 31,136.73 = 10,888.62 : x
  2. Step 2: Convert to fraction form
    20,751.72/31,136.73 = 10,888.62/x
  3. Step 3: Cross multiply
    20,751.72x = 31,136.73 × 10,888.62
  4. Step 4: Simplify right side
    20,751.72x = 339,036,021.01
  5. Step 5: Solve for x
    x = 339,036,021.01/20,751.72
  6. Step 6: Final answer
    x = 16,337.73

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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.