Home / 9,988.11-13,783.67-5,511.85

Finding the Fourth Proportional to 9,988.11, 13,783.67 and 5,511.85

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Solution

The fourth proportional to 9,988.11, 13,783.67 and 5,511.85 is: 7,606.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.11 : 13,783.67 = 5,511.85 : x
  2. Step 2: Convert to fraction form
    9,988.11/13,783.67 = 5,511.85/x
  3. Step 3: Cross multiply
    9,988.11x = 13,783.67 × 5,511.85
  4. Step 4: Simplify right side
    9,988.11x = 75,973,480.14
  5. Step 5: Solve for x
    x = 75,973,480.14/9,988.11
  6. Step 6: Final answer
    x = 7,606.39

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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.