Home / 13,606.14-18,777.30-7,638.21

Finding the Fourth Proportional to 13,606.14, 18,777.30 and 7,638.21

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Solution

The fourth proportional to 13,606.14, 18,777.30 and 7,638.21 is: 10,541.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.14 : 18,777.30 = 7,638.21 : x
  2. Step 2: Convert to fraction form
    13,606.14/18,777.30 = 7,638.21/x
  3. Step 3: Cross multiply
    13,606.14x = 18,777.30 × 7,638.21
  4. Step 4: Simplify right side
    13,606.14x = 143,424,960.63
  5. Step 5: Solve for x
    x = 143,424,960.63/13,606.14
  6. Step 6: Final answer
    x = 10,541.19

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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.