Home / 14,187.21-19,579.00-8,139.25

Finding the Fourth Proportional to 14,187.21, 19,579.00 and 8,139.25

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Solution

The fourth proportional to 14,187.21, 19,579.00 and 8,139.25 is: 11,232.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,187.21 : 19,579.00 = 8,139.25 : x
  2. Step 2: Convert to fraction form
    14,187.21/19,579.00 = 8,139.25/x
  3. Step 3: Cross multiply
    14,187.21x = 19,579.00 × 8,139.25
  4. Step 4: Simplify right side
    14,187.21x = 159,358,346.88
  5. Step 5: Solve for x
    x = 159,358,346.88/14,187.21
  6. Step 6: Final answer
    x = 11,232.53

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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.