Home / 13,078.29-18,038.91-8,600.61

Finding the Fourth Proportional to 13,078.29, 18,038.91 and 8,600.61

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Solution

The fourth proportional to 13,078.29, 18,038.91 and 8,600.61 is: 11,862.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.29 : 18,038.91 = 8,600.61 : x
  2. Step 2: Convert to fraction form
    13,078.29/18,038.91 = 8,600.61/x
  3. Step 3: Cross multiply
    13,078.29x = 18,038.91 × 8,600.61
  4. Step 4: Simplify right side
    13,078.29x = 155,145,629.74
  5. Step 5: Solve for x
    x = 155,145,629.74/13,078.29
  6. Step 6: Final answer
    x = 11,862.84

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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.