Home / 13,928.64-20,887.70-5,605.82

Finding the Fourth Proportional to 13,928.64, 20,887.70 and 5,605.82

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Solution

The fourth proportional to 13,928.64, 20,887.70 and 5,605.82 is: 8,406.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.64 : 20,887.70 = 5,605.82 : x
  2. Step 2: Convert to fraction form
    13,928.64/20,887.70 = 5,605.82/x
  3. Step 3: Cross multiply
    13,928.64x = 20,887.70 × 5,605.82
  4. Step 4: Simplify right side
    13,928.64x = 117,092,686.41
  5. Step 5: Solve for x
    x = 117,092,686.41/13,928.64
  6. Step 6: Final answer
    x = 8,406.61

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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.