Home / 12,190.20-16,810.92-8,407.32

Finding the Fourth Proportional to 12,190.20, 16,810.92 and 8,407.32

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Solution

The fourth proportional to 12,190.20, 16,810.92 and 8,407.32 is: 11,594.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.20 : 16,810.92 = 8,407.32 : x
  2. Step 2: Convert to fraction form
    12,190.20/16,810.92 = 8,407.32/x
  3. Step 3: Cross multiply
    12,190.20x = 16,810.92 × 8,407.32
  4. Step 4: Simplify right side
    12,190.20x = 141,334,783.93
  5. Step 5: Solve for x
    x = 141,334,783.93/12,190.20
  6. Step 6: Final answer
    x = 11,594.13

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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.