Home / 13,270.17-18,293.20-8,489.60

Finding the Fourth Proportional to 13,270.17, 18,293.20 and 8,489.60

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Solution

The fourth proportional to 13,270.17, 18,293.20 and 8,489.60 is: 11,703.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,270.17 : 18,293.20 = 8,489.60 : x
  2. Step 2: Convert to fraction form
    13,270.17/18,293.20 = 8,489.60/x
  3. Step 3: Cross multiply
    13,270.17x = 18,293.20 × 8,489.60
  4. Step 4: Simplify right side
    13,270.17x = 155,301,950.72
  5. Step 5: Solve for x
    x = 155,301,950.72/13,270.17
  6. Step 6: Final answer
    x = 11,703.09

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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.