Home / 13,778.48-20,655.56-5,011.86

Finding the Fourth Proportional to 13,778.48, 20,655.56 and 5,011.86

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Solution

The fourth proportional to 13,778.48, 20,655.56 and 5,011.86 is: 7,513.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.48 : 20,655.56 = 5,011.86 : x
  2. Step 2: Convert to fraction form
    13,778.48/20,655.56 = 5,011.86/x
  3. Step 3: Cross multiply
    13,778.48x = 20,655.56 × 5,011.86
  4. Step 4: Simplify right side
    13,778.48x = 103,522,774.94
  5. Step 5: Solve for x
    x = 103,522,774.94/13,778.48
  6. Step 6: Final answer
    x = 7,513.37

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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.