Home / 10,913.68-15,054.84-7,135.64

Finding the Fourth Proportional to 10,913.68, 15,054.84 and 7,135.64

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Solution

The fourth proportional to 10,913.68, 15,054.84 and 7,135.64 is: 9,843.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,913.68 : 15,054.84 = 7,135.64 : x
  2. Step 2: Convert to fraction form
    10,913.68/15,054.84 = 7,135.64/x
  3. Step 3: Cross multiply
    10,913.68x = 15,054.84 × 7,135.64
  4. Step 4: Simplify right side
    10,913.68x = 107,425,918.50
  5. Step 5: Solve for x
    x = 107,425,918.50/10,913.68
  6. Step 6: Final answer
    x = 9,843.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.