Home / 12,612.12-18,928.26-5,687.16

Finding the Fourth Proportional to 12,612.12, 18,928.26 and 5,687.16

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Solution

The fourth proportional to 12,612.12, 18,928.26 and 5,687.16 is: 8,535.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.12 : 18,928.26 = 5,687.16 : x
  2. Step 2: Convert to fraction form
    12,612.12/18,928.26 = 5,687.16/x
  3. Step 3: Cross multiply
    12,612.12x = 18,928.26 × 5,687.16
  4. Step 4: Simplify right side
    12,612.12x = 107,648,043.14
  5. Step 5: Solve for x
    x = 107,648,043.14/12,612.12
  6. Step 6: Final answer
    x = 8,535.29

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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.