Home / 13,665.22-18,859.05-7,697.62

Finding the Fourth Proportional to 13,665.22, 18,859.05 and 7,697.62

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Solution

The fourth proportional to 13,665.22, 18,859.05 and 7,697.62 is: 10,623.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.22 : 18,859.05 = 7,697.62 : x
  2. Step 2: Convert to fraction form
    13,665.22/18,859.05 = 7,697.62/x
  3. Step 3: Cross multiply
    13,665.22x = 18,859.05 × 7,697.62
  4. Step 4: Simplify right side
    13,665.22x = 145,169,800.46
  5. Step 5: Solve for x
    x = 145,169,800.46/13,665.22
  6. Step 6: Final answer
    x = 10,623.31

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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.