Home / 13,777.08-20,654.12-6,386.82

Finding the Fourth Proportional to 13,777.08, 20,654.12 and 6,386.82

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Solution

The fourth proportional to 13,777.08, 20,654.12 and 6,386.82 is: 9,574.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,777.08 : 20,654.12 = 6,386.82 : x
  2. Step 2: Convert to fraction form
    13,777.08/20,654.12 = 6,386.82/x
  3. Step 3: Cross multiply
    13,777.08x = 20,654.12 × 6,386.82
  4. Step 4: Simplify right side
    13,777.08x = 131,914,146.70
  5. Step 5: Solve for x
    x = 131,914,146.70/13,777.08
  6. Step 6: Final answer
    x = 9,574.90

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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.