Home / 11,261.14-15,530.28-7,278.08

Finding the Fourth Proportional to 11,261.14, 15,530.28 and 7,278.08

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Solution

The fourth proportional to 11,261.14, 15,530.28 and 7,278.08 is: 10,037.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,261.14 : 15,530.28 = 7,278.08 : x
  2. Step 2: Convert to fraction form
    11,261.14/15,530.28 = 7,278.08/x
  3. Step 3: Cross multiply
    11,261.14x = 15,530.28 × 7,278.08
  4. Step 4: Simplify right side
    11,261.14x = 113,030,620.26
  5. Step 5: Solve for x
    x = 113,030,620.26/11,261.14
  6. Step 6: Final answer
    x = 10,037.23

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1.5x scale

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.