Home / 13,666.36-18,861.36-7,699.18

Finding the Fourth Proportional to 13,666.36, 18,861.36 and 7,699.18

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Solution

The fourth proportional to 13,666.36, 18,861.36 and 7,699.18 is: 10,625.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.36 : 18,861.36 = 7,699.18 : x
  2. Step 2: Convert to fraction form
    13,666.36/18,861.36 = 7,699.18/x
  3. Step 3: Cross multiply
    13,666.36x = 18,861.36 × 7,699.18
  4. Step 4: Simplify right side
    13,666.36x = 145,217,005.68
  5. Step 5: Solve for x
    x = 145,217,005.68/13,666.36
  6. Step 6: Final answer
    x = 10,625.87

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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.