Home / 13,606.68-18,777.48-7,638.92

Finding the Fourth Proportional to 13,606.68, 18,777.48 and 7,638.92

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Solution

The fourth proportional to 13,606.68, 18,777.48 and 7,638.92 is: 10,541.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.68 : 18,777.48 = 7,638.92 : x
  2. Step 2: Convert to fraction form
    13,606.68/18,777.48 = 7,638.92/x
  3. Step 3: Cross multiply
    13,606.68x = 18,777.48 × 7,638.92
  4. Step 4: Simplify right side
    13,606.68x = 143,439,667.52
  5. Step 5: Solve for x
    x = 143,439,667.52/13,606.68
  6. Step 6: Final answer
    x = 10,541.86

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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.