Home / 19,984.86-29,966.28-8,135.60

Finding the Fourth Proportional to 19,984.86, 29,966.28 and 8,135.60

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Solution

The fourth proportional to 19,984.86, 29,966.28 and 8,135.60 is: 12,198.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,984.86 : 29,966.28 = 8,135.60 : x
  2. Step 2: Convert to fraction form
    19,984.86/29,966.28 = 8,135.60/x
  3. Step 3: Cross multiply
    19,984.86x = 29,966.28 × 8,135.60
  4. Step 4: Simplify right side
    19,984.86x = 243,793,720.81
  5. Step 5: Solve for x
    x = 243,793,720.81/19,984.86
  6. Step 6: Final answer
    x = 12,198.92

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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.