Home / 12,655.44-18,970.20-6,403.86

Finding the Fourth Proportional to 12,655.44, 18,970.20 and 6,403.86

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Solution

The fourth proportional to 12,655.44, 18,970.20 and 6,403.86 is: 9,599.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.44 : 18,970.20 = 6,403.86 : x
  2. Step 2: Convert to fraction form
    12,655.44/18,970.20 = 6,403.86/x
  3. Step 3: Cross multiply
    12,655.44x = 18,970.20 × 6,403.86
  4. Step 4: Simplify right side
    12,655.44x = 121,482,504.97
  5. Step 5: Solve for x
    x = 121,482,504.97/12,655.44
  6. Step 6: Final answer
    x = 9,599.23

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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.