Home / 13,867.40-20,809.34-5,108.46

Finding the Fourth Proportional to 13,867.40, 20,809.34 and 5,108.46

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Solution

The fourth proportional to 13,867.40, 20,809.34 and 5,108.46 is: 7,665.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,867.40 : 20,809.34 = 5,108.46 : x
  2. Step 2: Convert to fraction form
    13,867.40/20,809.34 = 5,108.46/x
  3. Step 3: Cross multiply
    13,867.40x = 20,809.34 × 5,108.46
  4. Step 4: Simplify right side
    13,867.40x = 106,303,655.47
  5. Step 5: Solve for x
    x = 106,303,655.47/13,867.40
  6. Step 6: Final answer
    x = 7,665.73

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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.