Home / 20,641.93-30,968.37-12,645.82

Finding the Fourth Proportional to 20,641.93, 30,968.37 and 12,645.82

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Solution

The fourth proportional to 20,641.93, 30,968.37 and 12,645.82 is: 18,972.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,641.93 : 30,968.37 = 12,645.82 : x
  2. Step 2: Convert to fraction form
    20,641.93/30,968.37 = 12,645.82/x
  3. Step 3: Cross multiply
    20,641.93x = 30,968.37 × 12,645.82
  4. Step 4: Simplify right side
    20,641.93x = 391,620,432.71
  5. Step 5: Solve for x
    x = 391,620,432.71/20,641.93
  6. Step 6: Final answer
    x = 18,972.08

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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.