Home / 20,656.86-28,497.30-12,268.50

Finding the Fourth Proportional to 20,656.86, 28,497.30 and 12,268.50

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Solution

The fourth proportional to 20,656.86, 28,497.30 and 12,268.50 is: 16,925.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.86 : 28,497.30 = 12,268.50 : x
  2. Step 2: Convert to fraction form
    20,656.86/28,497.30 = 12,268.50/x
  3. Step 3: Cross multiply
    20,656.86x = 28,497.30 × 12,268.50
  4. Step 4: Simplify right side
    20,656.86x = 349,619,125.05
  5. Step 5: Solve for x
    x = 349,619,125.05/20,656.86
  6. Step 6: Final answer
    x = 16,925.09

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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.