Home / 14,189.24-19,581.36-8,221.34

Finding the Fourth Proportional to 14,189.24, 19,581.36 and 8,221.34

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Solution

The fourth proportional to 14,189.24, 19,581.36 and 8,221.34 is: 11,345.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,189.24 : 19,581.36 = 8,221.34 : x
  2. Step 2: Convert to fraction form
    14,189.24/19,581.36 = 8,221.34/x
  3. Step 3: Cross multiply
    14,189.24x = 19,581.36 × 8,221.34
  4. Step 4: Simplify right side
    14,189.24x = 160,985,018.22
  5. Step 5: Solve for x
    x = 160,985,018.22/14,189.24
  6. Step 6: Final answer
    x = 11,345.57

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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.