Home / 13,356.28-18,425.46-8,642.08

Finding the Fourth Proportional to 13,356.28, 18,425.46 and 8,642.08

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Solution

The fourth proportional to 13,356.28, 18,425.46 and 8,642.08 is: 11,922.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.28 : 18,425.46 = 8,642.08 : x
  2. Step 2: Convert to fraction form
    13,356.28/18,425.46 = 8,642.08/x
  3. Step 3: Cross multiply
    13,356.28x = 18,425.46 × 8,642.08
  4. Step 4: Simplify right side
    13,356.28x = 159,234,299.36
  5. Step 5: Solve for x
    x = 159,234,299.36/13,356.28
  6. Step 6: Final answer
    x = 11,922.05

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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.