Home / 13,935.48-20,903.14-3,405.55

Finding the Fourth Proportional to 13,935.48, 20,903.14 and 3,405.55

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Solution

The fourth proportional to 13,935.48, 20,903.14 and 3,405.55 is: 5,108.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.48 : 20,903.14 = 3,405.55 : x
  2. Step 2: Convert to fraction form
    13,935.48/20,903.14 = 3,405.55/x
  3. Step 3: Cross multiply
    13,935.48x = 20,903.14 × 3,405.55
  4. Step 4: Simplify right side
    13,935.48x = 71,186,671.40
  5. Step 5: Solve for x
    x = 71,186,671.40/13,935.48
  6. Step 6: Final answer
    x = 5,108.31

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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.