Home / 11,140.45-15,368.87-7,160.82

Finding the Fourth Proportional to 11,140.45, 15,368.87 and 7,160.82

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Solution

The fourth proportional to 11,140.45, 15,368.87 and 7,160.82 is: 9,878.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,140.45 : 15,368.87 = 7,160.82 : x
  2. Step 2: Convert to fraction form
    11,140.45/15,368.87 = 7,160.82/x
  3. Step 3: Cross multiply
    11,140.45x = 15,368.87 × 7,160.82
  4. Step 4: Simplify right side
    11,140.45x = 110,053,634.83
  5. Step 5: Solve for x
    x = 110,053,634.83/11,140.45
  6. Step 6: Final answer
    x = 9,878.75

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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.