Home / 13,612.10-20,418.89-4,253.40

Finding the Fourth Proportional to 13,612.10, 20,418.89 and 4,253.40

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Solution

The fourth proportional to 13,612.10, 20,418.89 and 4,253.40 is: 6,380.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.10 : 20,418.89 = 4,253.40 : x
  2. Step 2: Convert to fraction form
    13,612.10/20,418.89 = 4,253.40/x
  3. Step 3: Cross multiply
    13,612.10x = 20,418.89 × 4,253.40
  4. Step 4: Simplify right side
    13,612.10x = 86,849,685.46
  5. Step 5: Solve for x
    x = 86,849,685.46/13,612.10
  6. Step 6: Final answer
    x = 6,380.33

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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.