Home / 13,807.75-19,055.25-8,221.99

Finding the Fourth Proportional to 13,807.75, 19,055.25 and 8,221.99

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Solution

The fourth proportional to 13,807.75, 19,055.25 and 8,221.99 is: 11,346.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,807.75 : 19,055.25 = 8,221.99 : x
  2. Step 2: Convert to fraction form
    13,807.75/19,055.25 = 8,221.99/x
  3. Step 3: Cross multiply
    13,807.75x = 19,055.25 × 8,221.99
  4. Step 4: Simplify right side
    13,807.75x = 156,672,074.95
  5. Step 5: Solve for x
    x = 156,672,074.95/13,807.75
  6. Step 6: Final answer
    x = 11,346.68

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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.