Home / 13,311.69-19,961.39-4,985.75

Finding the Fourth Proportional to 13,311.69, 19,961.39 and 4,985.75

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Solution

The fourth proportional to 13,311.69, 19,961.39 and 4,985.75 is: 7,476.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.69 : 19,961.39 = 4,985.75 : x
  2. Step 2: Convert to fraction form
    13,311.69/19,961.39 = 4,985.75/x
  3. Step 3: Cross multiply
    13,311.69x = 19,961.39 × 4,985.75
  4. Step 4: Simplify right side
    13,311.69x = 99,522,534.52
  5. Step 5: Solve for x
    x = 99,522,534.52/13,311.69
  6. Step 6: Final answer
    x = 7,476.32

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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.