Home / 13,279.21-19,918.64-4,520.23

Finding the Fourth Proportional to 13,279.21, 19,918.64 and 4,520.23

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Solution

The fourth proportional to 13,279.21, 19,918.64 and 4,520.23 is: 6,780.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.21 : 19,918.64 = 4,520.23 : x
  2. Step 2: Convert to fraction form
    13,279.21/19,918.64 = 4,520.23/x
  3. Step 3: Cross multiply
    13,279.21x = 19,918.64 × 4,520.23
  4. Step 4: Simplify right side
    13,279.21x = 90,036,811.49
  5. Step 5: Solve for x
    x = 90,036,811.49/13,279.21
  6. Step 6: Final answer
    x = 6,780.28

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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.