Home / 13,887.59-19,166.76-8,221.91

Finding the Fourth Proportional to 13,887.59, 19,166.76 and 8,221.91

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Solution

The fourth proportional to 13,887.59, 19,166.76 and 8,221.91 is: 11,347.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,887.59 : 19,166.76 = 8,221.91 : x
  2. Step 2: Convert to fraction form
    13,887.59/19,166.76 = 8,221.91/x
  3. Step 3: Cross multiply
    13,887.59x = 19,166.76 × 8,221.91
  4. Step 4: Simplify right side
    13,887.59x = 157,587,279.88
  5. Step 5: Solve for x
    x = 157,587,279.88/13,887.59
  6. Step 6: Final answer
    x = 11,347.35

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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.