Home / 15,640.60-23,447.15-8,128.35

Finding the Fourth Proportional to 15,640.60, 23,447.15 and 8,128.35

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Solution

The fourth proportional to 15,640.60, 23,447.15 and 8,128.35 is: 12,185.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,640.60 : 23,447.15 = 8,128.35 : x
  2. Step 2: Convert to fraction form
    15,640.60/23,447.15 = 8,128.35/x
  3. Step 3: Cross multiply
    15,640.60x = 23,447.15 × 8,128.35
  4. Step 4: Simplify right side
    15,640.60x = 190,586,603.41
  5. Step 5: Solve for x
    x = 190,586,603.41/15,640.60
  6. Step 6: Final answer
    x = 12,185.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.