Home / 20,448.01-30,686.14-13,431.39

Finding the Fourth Proportional to 20,448.01, 30,686.14 and 13,431.39

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Solution

The fourth proportional to 20,448.01, 30,686.14 and 13,431.39 is: 20,156.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448.01 : 30,686.14 = 13,431.39 : x
  2. Step 2: Convert to fraction form
    20,448.01/30,686.14 = 13,431.39/x
  3. Step 3: Cross multiply
    20,448.01x = 30,686.14 × 13,431.39
  4. Step 4: Simplify right side
    20,448.01x = 412,157,415.65
  5. Step 5: Solve for x
    x = 412,157,415.65/20,448.01
  6. Step 6: Final answer
    x = 20,156.36

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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.