Home / 11,177.14-15,420.02-7,200.56

Finding the Fourth Proportional to 11,177.14, 15,420.02 and 7,200.56

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Solution

The fourth proportional to 11,177.14, 15,420.02 and 7,200.56 is: 9,933.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,177.14 : 15,420.02 = 7,200.56 : x
  2. Step 2: Convert to fraction form
    11,177.14/15,420.02 = 7,200.56/x
  3. Step 3: Cross multiply
    11,177.14x = 15,420.02 × 7,200.56
  4. Step 4: Simplify right side
    11,177.14x = 111,032,822.26
  5. Step 5: Solve for x
    x = 111,032,822.26/11,177.14
  6. Step 6: Final answer
    x = 9,933.92

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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.