Home / 18,770.86-25,899.90-12,055.55

Finding the Fourth Proportional to 18,770.86, 25,899.90 and 12,055.55

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Solution

The fourth proportional to 18,770.86, 25,899.90 and 12,055.55 is: 16,634.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.86 : 25,899.90 = 12,055.55 : x
  2. Step 2: Convert to fraction form
    18,770.86/25,899.90 = 12,055.55/x
  3. Step 3: Cross multiply
    18,770.86x = 25,899.90 × 12,055.55
  4. Step 4: Simplify right side
    18,770.86x = 312,237,539.45
  5. Step 5: Solve for x
    x = 312,237,539.45/18,770.86
  6. Step 6: Final answer
    x = 16,634.16

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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.