Home / 13,666.21-18,859.43-7,697.99

Finding the Fourth Proportional to 13,666.21, 18,859.43 and 7,697.99

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Solution

The fourth proportional to 13,666.21, 18,859.43 and 7,697.99 is: 10,623.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.21 : 18,859.43 = 7,697.99 : x
  2. Step 2: Convert to fraction form
    13,666.21/18,859.43 = 7,697.99/x
  3. Step 3: Cross multiply
    13,666.21x = 18,859.43 × 7,697.99
  4. Step 4: Simplify right side
    13,666.21x = 145,179,769.94
  5. Step 5: Solve for x
    x = 145,179,769.94/13,666.21
  6. Step 6: Final answer
    x = 10,623.27

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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.