Home / 13,666.76-18,861.56-8,365.12

Finding the Fourth Proportional to 13,666.76, 18,861.56 and 8,365.12

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Solution

The fourth proportional to 13,666.76, 18,861.56 and 8,365.12 is: 11,544.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.76 : 18,861.56 = 8,365.12 : x
  2. Step 2: Convert to fraction form
    13,666.76/18,861.56 = 8,365.12/x
  3. Step 3: Cross multiply
    13,666.76x = 18,861.56 × 8,365.12
  4. Step 4: Simplify right side
    13,666.76x = 157,779,212.79
  5. Step 5: Solve for x
    x = 157,779,212.79/13,666.76
  6. Step 6: Final answer
    x = 11,544.74

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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.