Home / 19,150.60-28,710.40-8,612.90

Finding the Fourth Proportional to 19,150.60, 28,710.40 and 8,612.90

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Solution

The fourth proportional to 19,150.60, 28,710.40 and 8,612.90 is: 12,912.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,150.60 : 28,710.40 = 8,612.90 : x
  2. Step 2: Convert to fraction form
    19,150.60/28,710.40 = 8,612.90/x
  3. Step 3: Cross multiply
    19,150.60x = 28,710.40 × 8,612.90
  4. Step 4: Simplify right side
    19,150.60x = 247,279,804.16
  5. Step 5: Solve for x
    x = 247,279,804.16/19,150.60
  6. Step 6: Final answer
    x = 12,912.38

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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.