Home / 13,439.86-20,151.56-5,539.93

Finding the Fourth Proportional to 13,439.86, 20,151.56 and 5,539.93

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Solution

The fourth proportional to 13,439.86, 20,151.56 and 5,539.93 is: 8,306.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.86 : 20,151.56 = 5,539.93 : x
  2. Step 2: Convert to fraction form
    13,439.86/20,151.56 = 5,539.93/x
  3. Step 3: Cross multiply
    13,439.86x = 20,151.56 × 5,539.93
  4. Step 4: Simplify right side
    13,439.86x = 111,638,195.26
  5. Step 5: Solve for x
    x = 111,638,195.26/13,439.86
  6. Step 6: Final answer
    x = 8,306.50

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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.