Home / 13,586.89-18,749.51-8,279.77

Finding the Fourth Proportional to 13,586.89, 18,749.51 and 8,279.77

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Solution

The fourth proportional to 13,586.89, 18,749.51 and 8,279.77 is: 11,425.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.89 : 18,749.51 = 8,279.77 : x
  2. Step 2: Convert to fraction form
    13,586.89/18,749.51 = 8,279.77/x
  3. Step 3: Cross multiply
    13,586.89x = 18,749.51 × 8,279.77
  4. Step 4: Simplify right side
    13,586.89x = 155,241,536.67
  5. Step 5: Solve for x
    x = 155,241,536.67/13,586.89
  6. Step 6: Final answer
    x = 11,425.84

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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.