Home / 13,279.34-19,919.01-4,520.54

Finding the Fourth Proportional to 13,279.34, 19,919.01 and 4,520.54

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Solution

The fourth proportional to 13,279.34, 19,919.01 and 4,520.54 is: 6,780.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.34 : 19,919.01 = 4,520.54 : x
  2. Step 2: Convert to fraction form
    13,279.34/19,919.01 = 4,520.54/x
  3. Step 3: Cross multiply
    13,279.34x = 19,919.01 × 4,520.54
  4. Step 4: Simplify right side
    13,279.34x = 90,044,681.47
  5. Step 5: Solve for x
    x = 90,044,681.47/13,279.34
  6. Step 6: Final answer
    x = 6,780.81

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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.