Home / 12,531.88-18,799.62-4,210.12

Finding the Fourth Proportional to 12,531.88, 18,799.62 and 4,210.12

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Solution

The fourth proportional to 12,531.88, 18,799.62 and 4,210.12 is: 6,315.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,531.88 : 18,799.62 = 4,210.12 : x
  2. Step 2: Convert to fraction form
    12,531.88/18,799.62 = 4,210.12/x
  3. Step 3: Cross multiply
    12,531.88x = 18,799.62 × 4,210.12
  4. Step 4: Simplify right side
    12,531.88x = 79,148,656.15
  5. Step 5: Solve for x
    x = 79,148,656.15/12,531.88
  6. Step 6: Final answer
    x = 6,315.78

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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.