Home / 12,642.21-18,966.96-5,245.29

Finding the Fourth Proportional to 12,642.21, 18,966.96 and 5,245.29

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Solution

The fourth proportional to 12,642.21, 18,966.96 and 5,245.29 is: 7,869.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642.21 : 18,966.96 = 5,245.29 : x
  2. Step 2: Convert to fraction form
    12,642.21/18,966.96 = 5,245.29/x
  3. Step 3: Cross multiply
    12,642.21x = 18,966.96 × 5,245.29
  4. Step 4: Simplify right side
    12,642.21x = 99,487,205.62
  5. Step 5: Solve for x
    x = 99,487,205.62/12,642.21
  6. Step 6: Final answer
    x = 7,869.45

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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.