Home / 10,520.36-15,786.57-4,279.22

Finding the Fourth Proportional to 10,520.36, 15,786.57 and 4,279.22

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Solution

The fourth proportional to 10,520.36, 15,786.57 and 4,279.22 is: 6,421.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.36 : 15,786.57 = 4,279.22 : x
  2. Step 2: Convert to fraction form
    10,520.36/15,786.57 = 4,279.22/x
  3. Step 3: Cross multiply
    10,520.36x = 15,786.57 × 4,279.22
  4. Step 4: Simplify right side
    10,520.36x = 67,554,206.08
  5. Step 5: Solve for x
    x = 67,554,206.08/10,520.36
  6. Step 6: Final answer
    x = 6,421.28

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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.