Home / 13,539.90-20,310.42-4,774.86

Finding the Fourth Proportional to 13,539.90, 20,310.42 and 4,774.86

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Solution

The fourth proportional to 13,539.90, 20,310.42 and 4,774.86 is: 7,162.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.90 : 20,310.42 = 4,774.86 : x
  2. Step 2: Convert to fraction form
    13,539.90/20,310.42 = 4,774.86/x
  3. Step 3: Cross multiply
    13,539.90x = 20,310.42 × 4,774.86
  4. Step 4: Simplify right side
    13,539.90x = 96,979,412.04
  5. Step 5: Solve for x
    x = 96,979,412.04/13,539.90
  6. Step 6: Final answer
    x = 7,162.49

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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.