Home / 13,609.50-18,776.79-8,301.66

Finding the Fourth Proportional to 13,609.50, 18,776.79 and 8,301.66

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Solution

The fourth proportional to 13,609.50, 18,776.79 and 8,301.66 is: 11,453.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,609.50 : 18,776.79 = 8,301.66 : x
  2. Step 2: Convert to fraction form
    13,609.50/18,776.79 = 8,301.66/x
  3. Step 3: Cross multiply
    13,609.50x = 18,776.79 × 8,301.66
  4. Step 4: Simplify right side
    13,609.50x = 155,878,526.47
  5. Step 5: Solve for x
    x = 155,878,526.47/13,609.50
  6. Step 6: Final answer
    x = 11,453.66

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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.