Home / 13,358.90-18,431.97-8,637.50

Finding the Fourth Proportional to 13,358.90, 18,431.97 and 8,637.50

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Solution

The fourth proportional to 13,358.90, 18,431.97 and 8,637.50 is: 11,917.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.90 : 18,431.97 = 8,637.50 : x
  2. Step 2: Convert to fraction form
    13,358.90/18,431.97 = 8,637.50/x
  3. Step 3: Cross multiply
    13,358.90x = 18,431.97 × 8,637.50
  4. Step 4: Simplify right side
    13,358.90x = 159,206,140.88
  5. Step 5: Solve for x
    x = 159,206,140.88/13,358.90
  6. Step 6: Final answer
    x = 11,917.61

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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.