Home / 13,537.87-20,306.80-8,919.79

Finding the Fourth Proportional to 13,537.87, 20,306.80 and 8,919.79

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Solution

The fourth proportional to 13,537.87, 20,306.80 and 8,919.79 is: 13,379.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,537.87 : 20,306.80 = 8,919.79 : x
  2. Step 2: Convert to fraction form
    13,537.87/20,306.80 = 8,919.79/x
  3. Step 3: Cross multiply
    13,537.87x = 20,306.80 × 8,919.79
  4. Step 4: Simplify right side
    13,537.87x = 181,132,267.74
  5. Step 5: Solve for x
    x = 181,132,267.74/13,537.87
  6. Step 6: Final answer
    x = 13,379.68

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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.