Home / 9,988.18-13,783.30-5,511.85

Finding the Fourth Proportional to 9,988.18, 13,783.30 and 5,511.85

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Solution

The fourth proportional to 9,988.18, 13,783.30 and 5,511.85 is: 7,606.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.18 : 13,783.30 = 5,511.85 : x
  2. Step 2: Convert to fraction form
    9,988.18/13,783.30 = 5,511.85/x
  3. Step 3: Cross multiply
    9,988.18x = 13,783.30 × 5,511.85
  4. Step 4: Simplify right side
    9,988.18x = 75,971,433.87
  5. Step 5: Solve for x
    x = 75,971,433.87/9,988.18
  6. Step 6: Final answer
    x = 7,606.14

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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.