Home / 9,980.21-13,772.70-5,503.85

Finding the Fourth Proportional to 9,980.21, 13,772.70 and 5,503.85

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Solution

The fourth proportional to 9,980.21, 13,772.70 and 5,503.85 is: 7,595.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,980.21 : 13,772.70 = 5,503.85 : x
  2. Step 2: Convert to fraction form
    9,980.21/13,772.70 = 5,503.85/x
  3. Step 3: Cross multiply
    9,980.21x = 13,772.70 × 5,503.85
  4. Step 4: Simplify right side
    9,980.21x = 75,802,857.68
  5. Step 5: Solve for x
    x = 75,802,857.68/9,980.21
  6. Step 6: Final answer
    x = 7,595.31

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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.