Home / 13,606.05-18,777.42-7,637.34

Finding the Fourth Proportional to 13,606.05, 18,777.42 and 7,637.34

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Solution

The fourth proportional to 13,606.05, 18,777.42 and 7,637.34 is: 10,540.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.05 : 18,777.42 = 7,637.34 : x
  2. Step 2: Convert to fraction form
    13,606.05/18,777.42 = 7,637.34/x
  3. Step 3: Cross multiply
    13,606.05x = 18,777.42 × 7,637.34
  4. Step 4: Simplify right side
    13,606.05x = 143,409,540.86
  5. Step 5: Solve for x
    x = 143,409,540.86/13,606.05
  6. Step 6: Final answer
    x = 10,540.13

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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.