Home / 20,337.99-28,064.90-12,379.34

Finding the Fourth Proportional to 20,337.99, 28,064.90 and 12,379.34

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Solution

The fourth proportional to 20,337.99, 28,064.90 and 12,379.34 is: 17,082.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337.99 : 28,064.90 = 12,379.34 : x
  2. Step 2: Convert to fraction form
    20,337.99/28,064.90 = 12,379.34/x
  3. Step 3: Cross multiply
    20,337.99x = 28,064.90 × 12,379.34
  4. Step 4: Simplify right side
    20,337.99x = 347,424,939.17
  5. Step 5: Solve for x
    x = 347,424,939.17/20,337.99
  6. Step 6: Final answer
    x = 17,082.56

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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.