Home / 13,347.45-20,015.10-7,105.86

Finding the Fourth Proportional to 13,347.45, 20,015.10 and 7,105.86

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Solution

The fourth proportional to 13,347.45, 20,015.10 and 7,105.86 is: 10,655.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,347.45 : 20,015.10 = 7,105.86 : x
  2. Step 2: Convert to fraction form
    13,347.45/20,015.10 = 7,105.86/x
  3. Step 3: Cross multiply
    13,347.45x = 20,015.10 × 7,105.86
  4. Step 4: Simplify right side
    13,347.45x = 142,224,498.49
  5. Step 5: Solve for x
    x = 142,224,498.49/13,347.45
  6. Step 6: Final answer
    x = 10,655.56

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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.