Home / 35,815.68-53,716.08-13,621.28

Finding the Fourth Proportional to 35,815.68, 53,716.08 and 13,621.28

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Solution

The fourth proportional to 35,815.68, 53,716.08 and 13,621.28 is: 20,429.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,815.68 : 53,716.08 = 13,621.28 : x
  2. Step 2: Convert to fraction form
    35,815.68/53,716.08 = 13,621.28/x
  3. Step 3: Cross multiply
    35,815.68x = 53,716.08 × 13,621.28
  4. Step 4: Simplify right side
    35,815.68x = 731,681,766.18
  5. Step 5: Solve for x
    x = 731,681,766.18/35,815.68
  6. Step 6: Final answer
    x = 20,429.09

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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.