Home / 13,907.13-20,860.74-6,516.78

Finding the Fourth Proportional to 13,907.13, 20,860.74 and 6,516.78

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Solution

The fourth proportional to 13,907.13, 20,860.74 and 6,516.78 is: 9,775.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,907.13 : 20,860.74 = 6,516.78 : x
  2. Step 2: Convert to fraction form
    13,907.13/20,860.74 = 6,516.78/x
  3. Step 3: Cross multiply
    13,907.13x = 20,860.74 × 6,516.78
  4. Step 4: Simplify right side
    13,907.13x = 135,944,853.22
  5. Step 5: Solve for x
    x = 135,944,853.22/13,907.13
  6. Step 6: Final answer
    x = 9,775.19

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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.